Analytical chemistry Books

250 products


  • Fundamentals of Analytical Chemistry

    Cengage Learning, Inc Fundamentals of Analytical Chemistry

    5 in stock

    Book SynopsisTable of Contents1. The Nature of Analytical Chemistry Part 1: Quality of Analytical Measurements 2.Calculations Used In Analytical Chemistry 3.Precision and Accuracy of Chemical Analysis 4.Random Errors in Chemical Analysis 5.Statistical Data Treatment and Evaluation 6.Sampling, Standardization and Calibration Part II Chemical Equilibria 7.Aqueous Solutions and Chemical Equilibria 8.Effect of Electrolytes on Chemical Equilibria 9.Solving Equilibrium Problems for Complex Systems Part III Classical Methods of Analysis 10.Gravimetric Methods of Analysis 11.Titrations in Analytical Chemistry 12.Principles of Neutralization Titrations 13.Complex Acid/Base Systems 14.Applications of Neutralization Titrations 15.Complexation and Precipitation Reactions and Titrations Part IV Electrochemical Methods 16.Introduction to Electrochemistry 17.Applications of Standard Electrode Potentials 18.Applications of Oxidation/Reduction Titrations 19.Potentiometry 20.Bulk Electrolysis: Electrogravimetry and Coulometry 21.Voltammetry Part VSpectrochemical Analysis 22.Introduction to Spectrochemical Methods 23.Instruments for Optical Spectrometry 24.Molecular Absorption Spectroscopy 25.Molecular Fluorescence Spectroscopy 26.Atomic Spectroscopy 27.Mass Spectrometry Part VI Kinetics and Separations 28.Kinetic Methods of Analysis 29.Introduction to Analytical Separations 30.Gas Chromatography 31.High-Performance Liquid Chromatography 32.Miscellaneous Separation Methods Part VII Practical Aspects of Chemical Analysis Chapters 33-37 are available as pdf files on the Web 33.Analysis of Real Samples 34.Preparing Samples for Analysis 35.Decomposing and Desolving the Sample 36.Chemicals. Apparatus, and Unit Operations of Analytical Chemistry 37.Selected Methods of Analysis

    5 in stock

    £79.99

  • An Introduction to Medicinal Chemistry

    Oxford University Press An Introduction to Medicinal Chemistry

    2 in stock

    Book SynopsisThe market-leader in medicinal chemistry: clear, supportive, and practical. It helps students to effortlessly make the link from theory to real-life applications using practical and focused coverage alongside a package of supportive online resources.Trade ReviewThe best general undergraduate textbook on medicinal chemistry. This new edition retains the accessible style of writing, but provides important updates on the topics. * Dr Mark Ashton, School of Pharmacy, Newcastle University, UK *I read this masterpiece to build a strong knowledge of medicinal chemistry and it has helped me a lot. I would definitely recommend it to others. Detailed explanations of enzyme-substrate interactions and much more are very useful. * Jinkal Gondaria, MChem student, Manchester Metropolitan University, UK *A very useful medical chemistry book and teaching tool. Great learning resources and easy to digest content. * Dr Silvia M.M.A. Pereira-Lima, Department of Chemistry, University of Minho, Portugal *Table of Contents1: Drugs and Drug Targets 2: Protein Structure and Function 3: Enzymes: Structure and Function 4: Receptors: Structure and Function 5: Receptors and Signal Transduction 6: Nucleic Acids: Structure and Function 7: Enzymes as Drug Targets 8: Receptors as Drug Targets 9: Nucleic Acids as Drug Targets 10: Miscellaneous Drug Targets 11: Pharmacokinetics and Related Topics Case Study 1: Statins 12: Drug Discovery: Finding a Lead 13: Drug Design: Optimizing Target Interactions 14: Drug Design: Optimizing Access to the Target 15: Getting the Drug to Market Case Study 2: The Design of ACE Inhibitors Case Study 3: Artemisinin and Related Antimalarial Drugs Case Study 4: The Design of Oxamni Case Study 5: Fosfidomycin as an Antimalarial Agent 16: Combinatorial and Parallel Synthesis 17: In Silico Drug Design 18: Quantitative Structure-Activity Relationships Case Study 6: De Novo Design of a Thymidylate Synthase Inhibitor 19: Antibacterial Agents 20: Antiviral Agents 21: Anticancer Agents 22: Protein Kinase Inhibitors as Anticancer Agents 23: Antibodies and Other Biologics 24: Cholinergics, Anticholinergics, and Anticholinestarases 25: Drugs Acting on the Adrenergic Nervous System 26: The Opioid Analgesics 27: Anti-Ulcer Agents 28: Cardiovascular Drugs Case Study 7: Steroidal Anti-Inflammatory Agents Case Study 8: Design of a Novel Antidepressant Case Study 9: The Design and Development Of Aliskiren Case Study 10: Factor Xa Inhibitors Case Study 11: Reversible Inhibitors of HCV NS-34A Protease

    2 in stock

    £52.99

  • Introduction to Spectroscopy

    Cengage Learning, Inc Introduction to Spectroscopy

    3 in stock

    Book SynopsisIntroduces your students to the advances in spectroscopy with the text that has set the standard in the field for more than three decades.Table of Contents1. Molecular Formulas and What Can Be Learned from Them. 2. Infrared Spectroscopy. 3. Nuclear Magnetic Resonance Spectroscopy Part One: Basic Concepts. 4. Nuclear Magnetic Resonance Spectroscopy Part Two: Carbon-13 Spectra, Including Heteronuclear Coupling with Other Nuclei. 5. Nuclear Magnetic Resonance Spectroscopy Part Three: Spin-Spin Coupling. 6. Nuclear Magnetic Resonance Spectroscopy Part Four: Other Topics in One-Dimensional NMR. 7. Ultraviolet Spectroscopy. 8. Mass Spectrometry. 9. Combined Structure Problems. 10. Nuclear Magnetic Resonance Spectroscopy Part Five: Advanced NMR Techniques. Answers to Selected Problems. Appendix 1: Infrared Absorption Frequencies of Functional Groups. Appendix 2: Some Representative Chemical Shift Values for Various Types of Protons. Appendix 3: Typical Proton Coupling Constants. Appendix 4: Calculation of Proton (1H) Chemical Shifts. Appendix 5: Calculation of Carbon-13 Chemical Shifts. Appendix 6: 13C Coupling Constants. Appendix 7: Tables of Precise Masses and Isotopic Abundance Ratios for Molecular Ions Under Mass 100 Containing Carbon, Hydrogen, Nitrogen, and Oxygen. Appendix 8: Common Fragment Ions Under Mass 105. Appendix 9: Handy-Dandy Guide to Mass Spectral Fragmentation Patterns. Appendix 10: Index of Spectra.

    3 in stock

    £78.84

  • Handbook of Trace Evidence Analysis

    John Wiley & Sons Inc Handbook of Trace Evidence Analysis

    3 in stock

    Book SynopsisCovers new trace evidence techniques and expanding areas of analysis, along with key theory and applications Developed around the need for updated information in the disciplines of trace evidence the Handbook of Trace Evidence Analysis focuses on the increasing awareness and need for validation, modern methods for addressing and controlling contamination, the shift towards incorporating statistical analyses into the interpretation phase and cutting edge research into new forensic science methods and their application. Beginning with an overview of the topic and discussing the important role that information derived from trace materials can provide during investigations, the book then presents chapters on key techniques. The first being the critical nature of microscopy, and the methods employed for the recognition, collection, and preservation of trace evidence. Subsequent chapters review the core disciplines of trace evidence examination: paints and polymers, hairs, fibers and textiles and glass. Each chapter contains in-depth discussions on the origin of the materials involved, including any natural or synthetic processes involved in their production, the nuances involved in their detection, and the methods of analysis that are used to extract valuable information from samples. In addition, suggested workflows in method and testing selections, as well as addressing specific scientific challenges as well as the limitations of knowledge on the transfer, persistence and background abundance of trace materials are discussed. The book ends by examining the interpretation of trace evidence findings from a historical perspective and examining the methods that are currently being developed. Provides an in-depth introduction to the general area of trace evidence and discusses current and new techniquesConsolidates trace evidence and materials categories of testing into one reference seriesOffers a detailed focus on technical approaches and guidelines to trace evidenceIncludes analytical schemes/workflows and valuable guides for the interpretation of data and results The Handbook of Trace Evidence will appeal to forensic science academics, students, and practitioners in the trace evidence and materials science disciplines, as well as DNA analysts, toxicologists, forensic anthropologists, crime laboratory managers, criminal justice students and practitioners, and legal professionals. It would also be a valuable resource for every crime laboratory reference library.Table of ContentsList of Contributors xv Preface xvii 1 Trace Evidence Recognition, Collection, and Preservation 1Ted R. Schwartz, Daniel S. Rothenberg, and Brandi L. Clark 1.1 Introduction 1 1.2 Theories of Transfer and Persistence 1 1.2.1 Locard’s Exchange Principle 1 1.2.2 Primary, Secondary, Tertiary, etc. Transfers 2 1.2.3 Non-contact Transfers 4 1.2.4 Patterns Due to Contact 4 1.2.5 Factors Affecting the Likelihood of a Transfer 5 1.2.6 Factors Affecting Persistence 5 1.3 Proper Evidence Handling Practices 6 1.3.1 Proper Clothing to Wear and Why 7 1.3.2 Other Techniques to Avoid Contamination and Loss 7 1.4 Recognition, Collection, and Preservation of Trace Evidence at the Crime Scene 8 1.4.1 Searching for Relevant Trace Evidence 9 1.4.1.1 Visible Trace Evidence 9 1.4.1.2 Invisible Trace Evidence 9 1.4.2 Documentation 9 1.4.3 Collection 10 1.4.3.1 Collecting the Entire Item Containing Potential Trace Evidence 11 1.4.3.2 Picking with a Gloved Hand or Tweezers 13 1.4.3.3 Collecting Invisible Trace Evidence 14 1.4.3.4 Tape Lifting 14 1.4.3.5 Vacuum Sweeping 15 1.4.3.6 Tape Lifting vs. Vacuum Sweeping: Which Method to Use? 16 1.4.3.7 Other Techniques 16 1.4.4 Taking Known Exemplars and Alibi Samples 17 1.4.5 Collection of Trace Evidence from a Body 18 1.4.6 Preserving Evidence and Maintaining the Chain of Custody 19 Checklist: Crime Scene Procedures 19 Components of a Crime Scene Kit for Trace Evidence Collection 20 1.5 Recognition, Collection, and Preservation of Trace Evidence in the Laboratory 21 1.5.1 Workspace Preparation 21 Checklist: Preparation of Examination Area in the Laboratory 21 1.5.2 Evidence Examination Considerations 22 1.5.3 Initial Examination Considerations 22 A Note Regarding Evidence Handling and Potential DNA Contamination 22 1.5.4 Evidence Description 23 1.5.5 Macroscopic Evidence Examination 23 1.5.6 Stereomicroscopic Examination 23 1.5.7 Additional Documentation 24 1.5.8 The Collection of Trace Evidence from Items in the Laboratory 25 1.5.9 Collection Techniques 25 1.5.9.1 Picking off Observed Trace Evidence 25 1.5.9.2 Shaking/Scraping 26 1.5.9.3 Tape Lifting 27 1.5.9.4 Vacuum Sweeping 27 1.5.9.5 Combinations of the Above Methods 28 1.5.10 Taking Known Exemplar Samples 28 Checklist: Evidence Examination in the Laboratory 28 1.6 Summary 29 Acknowledgments 29 References 29 Further Reading 30 2 Polarized Light Microscopy for the Trace Evidence Examiner 32Andrew M. Bowen 2.1 Introduction 33 2.2 The Nature of Light 34 2.2.1 Reflection 35 2.2.2 Refraction 36 2.2.3 Dispersion 40 2.2.4 Temperature Coefficient of Refractive Index 41 2.2.5 Absorption of Light 41 2.2.6 Other Interactions Between Light and Matter 41 2.3 Light Microscopy 42 2.3.1 Image Formation in a Compound Light Microscope 42 2.3.2 Numerical Aperture and Resolution 45 2.4 Introduction to Crystallography 55 2.4.1 Symmetry 55 2.4.2 Crystal Point Groups 57 2.4.3 Six Crystal Systems 58 2.4.3.1 Cubic (Isometric) System 58 2.4.3.2 Tetragonal System 60 2.4.3.3 Hexagonal System 60 2.4.3.4 Orthorhombic System 62 2.4.3.5 Monoclinic System 62 2.4.3.6 Triclinic System 63 2.4.4 Crystal Morphology 64 2.4.4.1 Miller Indices 65 2.4.4.2 Crystal Forms and Crystal Habit 67 2.4.4.3 Crystal Morphology Through the Light Microscope 68 2.5 Introduction to Optical Crystallography 69 2.5.1 Optics of Isotropic Substances 69 2.5.2 Optics of Uniaxial Substances 75 2.5.3 Optics of Biaxial Substances 84 2.5.3.1 Optic Axial Plane and Optic Normal 88 2.5.3.2 Acute Bisectrix, Obtuse Bisectrix, Optic Sign, and Optic Axial Angle 90 2.5.3.3 Optical Orientation 91 2.5.3.4 Dispersion in Biaxial Crystals 93 2.6 Measurement of Optical Properties 94 2.6.1 Measurement of Refractive Index Values: Isotropic Substances 95 2.6.1.1 Becke Line Immersion Method 97 2.6.1.2 Single Variation Method 99 2.6.1.3 Emmons Double Variation Method 100 2.6.2 Measurement of Refractive Indices in Uniaxial Substances 100 2.6.3 Measurement of Refractive Index in Biaxial Substances 105 2.6.4 Retardation 107 2.6.5 Birefringence 113 2.6.6 Extinction Characteristics 120 2.6.7 Use of Compensators and Sign of Elongation 129 2.6.8 Conoscopic Observations of Uniaxial Substances 134 2.6.9 Conoscopic Observations on Biaxial Substances 142 2.6.10 Updated Measurement of Refractive Index Values: Uniaxial Substances 150 2.6.11 Updated Measurement of Refractive Index Values: Biaxial Substances 151 2.6.12 The Spindle Stage 151 2.7 Identification of an Unknown Using Optical Properties 152 2.7.1 Applications of Light Microscopy to Trace Evidence 155 References 156 3 Paints and Polymers 157Robyn B. Weimer, Diana M. Wright, and Tamara Hodgins 3.1 Introduction to the Paint and Polymer Discipline 157 3.2 Overview of Polymer Chemistry 159 3.2.1 Introduction to Polymers 159 3.2.2 Polymer Synthesis 159 3.3 Overview of Coatings 160 3.3.1 Chemistry and Terminology of Coatings 160 3.3.1.1 Binders 161 3.3.1.2 Pigments 161 3.3.1.3 Additives 163 3.3.1.4 Volatile Components 163 3.3.2 Manufacturing Considerations 163 3.3.3 Application Processes 164 3.3.3.1 Spraying 164 3.3.3.2 Dipping 165 3.3.3.3 Electrodeposition 165 3.3.4 Types of Coatings and End Uses 166 3.3.4.1 Automotive Coatings 166 3.3.4.2 Architectural Coatings 171 3.3.4.3 Vehicular Non-automotive Coatings 173 3.3.4.4 Tool Coatings 174 3.3.4.5 Other/Specialty Coatings 174 3.3.5 Other Polymeric Materials 177 3.3.5.1 Buttons, Hair Beads, Jewelry, and Synthetic Fingernails 177 3.3.5.2 Gasoline Cans 177 3.3.5.3 Plastic Bags 178 3.3.5.4 Gloves 178 3.3.5.5 Automotive Parts and Panels 178 3.3.5.6 Decals 178 3.3.5.7 Paintballs 179 3.3.5.8 Glitter 179 3.3.5.9 Foam 179 3.4 Forensic Examination 180 3.4.1 Recognition, Collection, and Preservation 180 3.4.1.1 Gross Examination 180 3.4.1.2 Visual Recovery and Collection 182 3.4.1.3 Recovery by Scraping 182 3.4.2 Analytical Scheme 184 3.4.2.1 Physical Fit 184 3.4.2.2 Comparison 185 3.4.2.3 Exposing of Layers 186 3.4.2.4 Physical Characteristics to Note 188 3.4.2.5 Further Testing 192 3.5 Paint Databases 199 3.5.1 The Royal Canadian Mounted Police Paint Data Query Database 200 3.6 Interpretation and Report Considerations 206 References 210 4 Forensic Hair Microscopy 219Jason C. Beckert 4.1 Introduction 219 4.1.1 History 219 4.2 Chemistry and Histology 221 4.2.1 Basic Chemistry 221 4.2.2 Basic Histology 222 4.2.3 Cuticle 223 4.2.4 Cortex 224 4.2.5 Medulla 225 4.2.6 Cell Membrane Complex 225 4.2.7 Follicle 225 4.3 Physiology 225 4.3.1 Hair Cycle 225 4.3.1.1 Timing 226 4.3.1.2 Shedding 227 4.3.2 Growth Rates 228 4.3.3 Changes with Age 228 4.3.3.1 Hair Color, Graying, and Baldness 229 4.4 Collection and Isolation 230 4.4.1 Questioned Samples 230 4.4.1.1 Techniques 230 4.4.1.2 Other Considerations 232 4.4.2 Known Samples 233 4.5 General Hair 235 4.5.1 Types of Hair 235 4.5.1.1 Human 235 4.5.1.2 Animal 236 4.5.2 Basic Microscopy 237 4.5.2.1 Cuticle 238 4.5.2.2 Cortex 239 4.5.2.3 Medulla 241 4.5.3 Basic Hair Identification 241 4.5.4 Human Versus Animal Hair 242 4.6 Human Hair Examinations 245 4.6.1 Somatic Origin 245 4.6.2 Ancestry 247 4.6.3 Cosmetic Treatment 249 4.6.4 Shaft Abnormalities 252 4.6.5 Hair End Morphology 254 4.6.5.1 Typical Root Morphology 254 4.6.5.2 General Significance 256 4.6.5.3 Suitability for DNA Testing 256 4.6.5.4 Postmortem Changes 257 4.6.5.5 Other Atypical Root Morphologies 259 4.6.5.6 Non-root Morphologies 259 4.6.6 Degradation 262 4.6.6.1 Weathering 262 4.6.6.2 Heat 264 4.6.6.3 Biodeterioration 265 4.6.6.4 Other General Changes 268 4.7 Human Hair Comparisons 268 4.7.1 Comparison Guidelines 269 4.7.1.1 Macroscopic Observations and Stereomicroscopy 269 4.7.1.2 Compound Light Microscopy 269 4.7.1.3 Comparison Microscopy 270 4.7.2 Conclusions and Interpretation 272 4.7.2.1 Association 272 4.7.2.2 Inconclusive 274 4.7.2.3 Exclusion 274 4.8 Transfer and Persistence 275 4.9 Animal Hair 279 4.9.1 Identification 280 4.9.2 Cats and Dogs 283 4.9.3 Textile Fur Fibers 286 4.10 Specialized Techniques 287 4.10.1 Examination of the Cuticular Surface 287 4.10.2 Transverse Cross-sections 289 4.10.3 Longitudinal Cross-sections 291 4.11 Practical Considerations 294 4.11.1 Training 294 4.11.2 Reference Collections 295 4.11.3 Examination Guidelines 296 4.11.4 Documentation, Report Writing, and Testimony 298 4.12 Criticisms 299 4.12.1 Probability 299 4.12.2 FBI Review 300 4.13 Summary: The Value of Forensic Hair Microscopy 301 References 304 5 Fibers 322Sandra Koch and Kornelia Nehse 5.1 Introduction to Forensic Fiber Analysis 322 5.2 Fiber Overview 323 5.2.1 Textile Production: Fiber – Yarn/Cordage – Fabric 323 5.2.2 Fiber Types 328 5.2.2.1 Natural Fibers 328 5.2.2.2 Manufactured Fibers 332 5.2.3 Fiber/Textile Coloration 338 5.3 Forensic Fiber Examination Background 339 5.3.1 Transfer and Persistence 339 5.3.2 Collection 342 5.3.2.1 Recognition, Collection, and Preservation 342 5.3.2.2 Collection 343 5.3.2.3 Visual Recovery: Picking 343 5.3.2.4 Other Recovery Methods: Taping, Scraping, and Vacuuming 343 5.3.3 Identification 344 5.3.3.1 Natural Fiber Identification 345 5.3.4 Comparison 351 5.4 Microscopical Analysis 352 5.4.1 Stereomicroscopy 353 5.4.2 Brightfield Microscopy 354 5.4.3 Polarized Light Microscopy 354 5.4.4 Fluorescence Microscopy 355 5.4.5 Comparison Microscopy 355 5.4.6 Scanning Electron Microscopy 356 5.5 Instrumental Analysis 356 5.5.1 Microspectrophotmetry: UV-Visible 356 5.5.2 Fourier Transform Infrared Spectroscopy 357 5.5.3 Raman Spectroscopy 358 5.5.4 Other Analytical Techniques (Non-routine) 359 5.5.4.1 Thin-layer Chromatography 359 5.5.4.2 Pyrolysis-Gas Chromatography Mass Spectrometry and Pyrolysis-Mass Spectrometry 361 5.5.4.3 High-Performance Liquid Chromatography 361 5.5.4.4 Melting Point 361 5.6 Microscopic Characteristics to Note in Forensic Fiber Examinations 361 5.7 Optical Properties 361 5.8 Chemistry 362 5.8.1 Solubility Testing 362 5.9 Forensic Examination 363 5.9.1 Analytical Scheme 363 5.9.2 Fabric and Cordage Examinations 363 5.9.2.1 Fabric Damage 363 5.9.2.2 Cordage 368 5.10 Interpretation and Reporting 368 5.10.1 Interpretation 368 5.10.2 Report Writing 369 5.11 Testimony 370 References 370 6 Interpretation of Glass Evidence 377James Curran, Tacha Hicks, and Tatiana Trejos 6.1 Introduction to Glass Examination 377 6.1.1 Composition, Manufacture, and Distribution 378 6.1.2 Forensic Examination Protocols 380 6.1.3 Refractive Index 380 6.1.4 Refractive Index Annealing 382 6.1.5 Elemental Analysis of Glass 382 6.1.5.1 SEM-EDS 383 6.1.5.2 Micro-X-Ray Fluorescence 383 6.1.5.3 ICP Methods 383 6.1.5.4 LIBS 385 6.1.6 Comparison of Discrimination Capabilities of the Methods of Analysis 386 6.2 Introduction to the Interpretation of Glass Evidence 387 6.2.1 Formulation ofWorking Propositions and Case Pre-assessment 388 6.2.2 Evaluation of Results Given Source Level Propositions 390 6.2.3 Evaluation of Results Given Activity Level Propositions 391 6.2.4 A Note on the Use of “Contact” or Pseudo-Activity Level Propositions 391 6.2.5 Evaluation of Results Given Offence Level Propositions 392 6.2.6 Evaluation of Results Given Source Level Propositions 393 6.2.7 The Two-Stage Approach 394 6.2.7.1 Interpretation Based on RI Measurements 394 6.2.7.2 Student’s t-Test 397 6.2.7.3 Interpretation Based on Elemental Analysis Measurements 401 6.2.7.4 Match Steps for Elemental Analysis 402 6.2.7.5 Disadvantages of the Two-Stage Approach 404 6.2.8 The Continuous Approach 404 6.2.8.1 Interpretation Based on RI Measurements 405 6.2.8.2 Interpretation Based on Elemental Analysis Measurements 407 6.2.8.3 Evaluation of Results Given Activity Level Propositions 408 6.2.8.4 Example 1: One Group, One Control 409 6.2.9 Assigning Background and Transfer Probabilities 410 6.3 Concluding Remarks 412 References 413 7 Interpreting Trace Evidence 421Patrick Buzzini and James M. Curran 7.1 What is Evidence Interpretation? 421 7.2 A Process of Uncertainties 422 7.3 Factors Affecting Evidence Interpretation 426 7.3.1 The Context of the Case 426 7.3.2 The Questions Directed to the Forensic Scientist and Hypothesis Formulation 427 7.3.3 Extent of Collected Analytical Information, Reliability, and Validity 429 7.3.4 The Degree of Similarity Between Compared Sets 431 7.4 Some Interpretive Issues: The Example of the Birmingham Six Bombing Case 432 7.4.1 Prosecutor’s Fallacy or the Transposed Conditional 433 7.4.2 Inappropriate Level of Propositions 434 7.4.3 Misconception of the 99% 434 7.4.4 Non-consideration of Plausible Defense Arguments 435 7.5 The Bayesian Approach 436 7.6 Implications of Expert Conclusions from Comparative Examinations: An Example with Fiber Evidence 438 7.6.1 Conclusion 1: Factual Reporting 439 7.6.2 Conclusion 2: Consistent with, Cannot Be Excluded, and Reasonable Degree of Certainty 439 7.6.3 Conclusion 3: High Discriminating Procedure 439 7.6.4 Conclusion 4: Rarity Assessment of the Suspected Source 439 7.6.5 Conclusion 5: “Association Key” Verbal Scale 440 7.6.6 Conclusion 6: Likelihood Ratio Verbal Scale 442 7.7 Conclusion 446 Acknowledgments 447 References 447 Index 455

    3 in stock

    £89.96

  • Practical Cyber Intelligence

    Wiley-Blackwell Practical Cyber Intelligence

    Book SynopsisOverview of the latest techniques and practices used in digital forensics and how to apply them to the investigative process Practical Cyber Intelligence provides a thorough and practical introduction to the different tactics, techniques, and procedures that exist in the field of cyber investigation and cyber forensics to collect, preserve, and analyze digital evidence, enabling readers to understand the digital landscape and analyze legacy devices, current models, and models that may be created in the future. Readers will learn how to determine what evidence exists and how to find it on a device, as well as what story it tells about the activities on the device. Over 100 images and tables are included to aid in reader comprehension, and case studies are included at the end of the book to elucidate core concepts throughout the text. To get the most value from this book, readers should be familiar with how a computer operates (e.g., CPU, RAM, and disk), be comf

    £71.55

  • CRC Handbook of Chemistry and Physics

    CRC Press CRC Handbook of Chemistry and Physics

    2 in stock

    Book SynopsisHigh Quality Science requires High Quality Data! Today, more than ever, the CRC Handbook of Chemistry and Physics is critical in ensuring that researchers, educators, and students have the highest quality data for chemical compounds and physical particles. Available both in print and online, the Handbook covers 390 chemistry, physics, and related subjects organized in easy-to-find, well-organized tables. Every year, new reported data and new scientific areas are added, making the Handbook the largest comprehensive physical science data source available anywhere. Handbook features include: All data reviewed and evaluated by subject matter experts Standardized chemical names, structures, property names, and property units Important information on subjects such as chemical and laboratory safety, and nomenclature Chemical and physical data critical for fields such as environmental science, bio-medical chemistry, organic and inorganic chemistry, materials innovation, geo- and astrophysics, and solid-state science Digital tools in our Online Edition to analyze, graph, process, and exploit our data content

    2 in stock

    £194.75

  • Digital Forensics and Cybersecurity

    John Wiley & Sons Digital Forensics and Cybersecurity

    2 in stock

    Book Synopsis

    2 in stock

    £171.00

  • CRC Handbook of Chemistry and Physics

    CRC Press CRC Handbook of Chemistry and Physics

    1 in stock

    Book SynopsisHigh Quality Science requires High Quality Data! Today, more than ever, the CRC Handbook of Chemistry and Physics is critical in ensuring that researchers, educators, and students have the highest quality data for chemical compounds and physical particles. Available both in print and online, the Handbook covers 390 chemistry, physics, and related subjects organized in easy-to-find, well-organized tables. Every year, new reported data and new scientific areas are added, making the Handbook the largest comprehensive physical science data source available anywhere. Handbook features include: All data reviewed and evaluated by subject matter experts Standardized chemical names, structures, property names, and property units Important information on subjects such as chemical and laboratory safety, and nomenclature Chemical and physical data critical for fields such as environmental science, bio-medical chemistry, organic a

    1 in stock

    £185.00

  • More Molecules of Murder

    Royal Society of Chemistry More Molecules of Murder

    1 in stock

    Book SynopsisHow can a plant as beautiful as the foxglove be so deadly and yet for more than a century be used to treat heart disease? The same is true of other naturally occurring molecules as will be revealed in this current book by award-winning author and chemist, John Emsley. More Molecules of Murder follows on from his highly-acclaimed earlier book Molecules of Murder, and again it deals with 14 potential poisons; seven of which are man-made and seven of which are natural. It investigates the crimes committed with them, not from the point of view of the murderers, their victims, or the detectives, but from the poison used. In so doing it throws new light on how these crimes were carried out and ultimately how the perpetrators were uncovered and brought to justice. Each chapter starts by looking at the target molecule itself, its discovery, its chemistry, its often-surprising use in medicine, its effects on the human body, and its toxicology. The rest of the chapter is devoted to murders and attempted murders in which it has been used. But, be reassured that murder by poison is not the threat it once was, thanks to laws which restrict access to such materials and to the skills of analytical chemists in detecting their presence in incredibly tiny amounts.Trade ReviewA fascinating book, which I thoroughly recommend. -- Dr Simon Cotton, Honorary Senior Lecturer in Chemistry at the University of Birmingham * Chemistry & Industry, Issue 4, Reviews, More Posions *The book is aimed at the general reader and it fulfils this objective in an informative, clear and well-written style. The book will be of interest to those who enjoy crime novels, a number of which are mentioned in the text. Indeed the book could be a handbook for the crime writer. -- James Hanson * Science Progress, Volume 101, Number 2, June 2018, pp. 205-205(1) *Table of ContentsEthylene Glycol for Antifreeze and Loved Ones; Oxalic Acid and Murders in Manila and Liverpool; Acrylamide in Fried Foods and in Auckland; Difenacoum, Amitriptyline and York; Temazepam and the Man with a Murderous Plan; Potassium Chloride: Essential to Life Yet Deadly; Tetramethylenedisulfotetramine, a Mouthful Best Avoided; Gelsemine and Cat Meat Stew; Strychnine and Cream; Digitalis and a Mysterious Death in Verona in 1329; Curare and the Psychopathic Surgeon from Argentina; Aconitine and Wimbledon; Cantharidin and Spanish Fly; Hemlock at the End of it All

    1 in stock

    £17.99

  • Practical Volumetric Analysis

    Royal Society of Chemistry Practical Volumetric Analysis

    2 in stock

    Book SynopsisProficiency in volumetric analysis is a key skill for chemists in research and industry. This work seeks to ‘modernise’ approaches to volumetric analysis, by relating practical work to vocationally-relevant topics, whilst maintaining the rigor required for satisfactory performance in practical examinations. Written by someone who has experienced both teaching and working as a research chemist, this up to date textbook on practical volumetric analysis will provide the theoretical chemistry associated with volumetric analysis supported by a selection of practicals. There will also be suggestions for a number of investigations which could form the basis of project-based learning or coursework, particularly for those pursing vocational science courses. Section 1 will consist of three theory chapters, covering preliminary concepts (fundamentals of chemistry, essential quantitative chemistry and concepts of statistics). Section 2 will be divided into four chapters, based on the four main divisions of volumetric analysis (acid-base titrimetry, redox titrimetry, precipitation titrimetry and complexometric titrimetry). Each chapter in this section will start with a review of essential theory, with worked examples and illustrations where appropriate, and end with a selection of laboratory practicals. Each chapter will also contain a number of open-ended investigations, for use in project-based learning or coursework. Section 3 will address more advanced topics and be divided into four chapters (volumetric analysis in industry, further statistical concepts, mathematics of titrimetry and advanced titrimetry). Practical work and suggestions for further reading will be included where appropriate. Practical Volumetric Analysis is suitable for students taking modules in introductory chemistry and analytical chemistry on undergraduate degree courses as well as providing guidance to non-specialists teaching chemistry.Table of ContentsSECTION 1 PRELIMINARIES: Foundations of Chemistry; Essential Quantitative Chemistry; Statistical Concepts; SECTION 2 INTRODUCTORY VOLUMETRIC ANALYSIS: Basics of Volumetric Analysis; Acid-Base Titrimetry; Redox Titrimetry; Precipitation Titrimetry; Complexometric Titrimetry; SECTION 3 FURTHER TOPICS IN VOLUMETRIC ANALYSIS: Advanced Titrimetry; The Mathematics of Titrimetry; Volumetric Analysis in Industry; Further Statistical Concepts; Index

    2 in stock

    £23.74

  • Analytical Chemistry I

    Springer-Verlag Berlin and Heidelberg GmbH & Co. KG Analytical Chemistry I

    2 in stock

    Book SynopsisThis workbook takes you through the successful work Harris, Textbook of Quantitative Analysis and is designed primarily for self-study. In five parts, the lecture content of analytical chemistry is summarized and explained using selected examples. Basic concepts of analytical chemistry are presented as well as the principle and various techniques of dimensional analysis and chromatography. UV/VIS, infrared and Raman spectroscopy are used to explain the investigation of molecularly present compounds, and selected techniques of atomic spectroscopy conclude the introduction to the fundamentals of analysis. The textbook's essential sections and illustrations are repeatedly referred to, which facilitates independent learning of the fundamentals of analytical chemistry.Easy to read, the book introduces the fundamentals and key techniques of analytical chemistry; it is aimed at undergraduate students of chemistry or related science subjects. It repeatedly refers back to the basics familiar from courses in general chemistry, so that the connections between what is already known and what is new become immediately apparent. Learning with this workbook has been tested in a distance learning chemistry course and facilitates preparation for module examinations in analytical chemistry.This book is a translation of the original German 1st edition Analytische Chemie I by Ulf Ritgen, published by Springer-Verlag GmbH Germany, part of Springer Nature in 2019. The translation was done with the help of artificial intelligence (machine translation by the service DeepL.com). A subsequent human revision was done primarily in terms of content, so that the book will read stylistically differently from a conventional translation. Springer Nature works continuously to further the development of tools for the production of books and on the related technologies to support the authors.Table of ContentsI Fundamentals.- Basic concepts of analysis.- Sampling and sample preparation.- Quality assurance and calibration.- II Dimensional analysis.- General information on dimensional analysis.- Dimensional analysis with acids and bases.- Dimensional analysis with complexes (complexometry).- A combination with considerable potential: redox titrations.- Poor solubility can be an advantage: Precipitation titration.- Gravimetry.- Selected detection methods.- III Chromatographic methods.- General aspects of chromatography.- Liquid chromatography (LC).- Gas chromatography (GC).- More specialized forms of chromatography.- Electrophoresis.- Choice of methodology.- IV Molecular spectroscopy.- General aspects of spectroscopy.- Excitation of electrons.- Vibrational spectroscopy.- V Atomic spectroscopy.- General aspects of atomic spectroscopy.- Atomic absorption spectroscopy (AAS).- Atomic emission spectrometry (AES, OES).- X-ray fluorescence analysis (XRF).- Glossary.

    2 in stock

    £46.74

  • Handbook of Forensic Medicine 3 Volume Set

    John Wiley & Sons Inc Handbook of Forensic Medicine 3 Volume Set

    10 in stock

    Book SynopsisHANDBOOK OF FORENSIC MEDICINE The gold standard in forensic medicine references In the Second Edition of Handbook of Forensic Medicine, editor Burkhard Madea brings to the reader, through a global team of expert contributors, a comprehensive and international approach to forensic medicine. In addition to offering new coverage of crime scene investigation, blood stain pattern analysis, terrorist attacks, fire disasters, new psychoactive substances, and molecular pathology, the book provides a thorough review of all aspects of forensic medicine. The chapters represent all aspects of quality control and best practice and include case studies throughout to help illustrate the concepts discussed within and emphasize the links between diverse subdisciplines. Specialists engaged in daily casework will find that aspects of routine analysis are addressed in each chapter. Handbook of Forensic Medicine 2e also covers the latest developments in forensic moleTable of ContentsVolume 1 Contents ix List of Contributors xxi Preface to the Second Edition xxv Preface to the First Edition xxvii Foreword by Denis A. Cusack xxix Foreword by Duarte Nuno Vieira xxxi PART I Duties of Forensic Medicine in Modern Societies 1 PART II Medical Aspects of Death 57 PART III Traumatology and Violent Death 311 PART IV Sudden and Unexpected Death from Natural Causes 801 PART V Clinical Forensic Medicine 917 PART VI Forensic Psychiatry 1055 PART VII Toxicology 1077 PART VIII Traffic Medicine 1313 PART X The Doctor and the Law 1585 PART XI Insurance Medicine 1623 Further References 1637 Index 1641 Volume 2 Contents ix List of Contributors xxi Preface to the Second Edition xxv Preface to the First Edition xxvii Foreword by Denis A. Cusack xxix Foreword by Duarte Nuno Vieira xxxi PART I Duties of Forensic Medicine in Modern Societies 1 PART II Medical Aspects of Death 57 PART III Traumatology and Violent Death 311 PART IV Sudden and Unexpected Death from Natural Causes 801 PART V Clinical Forensic Medicine 917 PART VI Forensic Psychiatry 1055 PART VII Toxicology 1077 PART VIII Traffic Medicine 1313 PART IX Identification 1495 PART X The Doctor and the Law 1585 PART XI Insurance Medicine 1623 Further References 1637 Index 1641 Volume 3 Contents ix List of Contributors xxi Preface to the Second Edition xxv Preface to the First Edition xxvii Foreword by Denis A. Cusack xxix Foreword by Duarte Nuno Vieira xxxi PART I Duties of Forensic Medicine in Modern Societies 1 PART II Medical Aspects of Death 57 PART III Traumatology and Violent Death 311 PART IV Sudden and Unexpected Death from Natural Causes 801 PART V Clinical Forensic Medicine 917 PART VI Forensic Psychiatry 1055 PART VII Toxicology 1077 PART VIII Traffic Medicine 1313 PART IX Identification 1495 PART X The Doctor and the Law 1585 PART XI Insurance Medicine 1623 Further References 1637 Index 1641

    10 in stock

    £315.00

  • Practical Statistics for the Analytical Scientist

    Royal Society of Chemistry Practical Statistics for the Analytical Scientist

    1 in stock

    Book SynopsisAnalytical chemists must use a range of statistical tools in their treatment of experimental data to obtain reliable results. Practical Statistics for the Analytical Scientist is a manual designed to help them negotiate the daunting specialist terminology and symbols. Prepared in conjunction with the Department of Trade and Industry''s Valid Analytical Measurement (VAM) programme, this volume covers the basic statistics needed in the laboratory. It describes the statistical procedures that are most likely to be required including summary and descriptive statistics, calibration, outlier testing, analysis of variance and basic quality control procedures. To improve understanding, many examples provide the user with material for consolidation and practice. The fully worked answers are given both to check the correct application of the procedures and to provide a template for future problems. Practical Statistics for the Analytical Scientist will be welcomed by practising analytical chemisTable of ContentsIntroduction: Choosing the Correct Statistics; Descriptive Statistics; Distribution Descriptives; Probability Distributions; Confidence Limits; Accuracy and Precision; Significance Testing; Outlier Tests; The ANalysis Of VAriance; Linear Regression; Polynomial Regression; Repeatability Standard Deviation; Reproducibility Standard Deviation; Analytical Quality Control; Statistical Sampling; Appendices; Subject Index

    1 in stock

    £28.45

  • Atlas of High Resolution Spectra of Rare Earth

    Royal Society of Chemistry Atlas of High Resolution Spectra of Rare Earth

    1 in stock

    Book SynopsisInductively Coupled Plasma-Atomic Emission Spectroscopy (ICP-AES) has been widely adopted as a routine analytical technique for elemental analysis in both industry and academia. However, spectral interference can be a major problem, particularly with such line-rich elements as the rare earth elements. An Atlas of High Resolution Spectra of Rare Earth Elements, which comes complete with a CD of spectra in full colour, is a reference source suitable for all analytical spectroscopists. Using some previously unpublished high resolution spectra, this atlas enables users of ICP-AES to select the best lines of any single rare earth element matrix. Clear instructions for the use of the accompanying CD are provided, which allows all adjacent interferent spectral profiles to be displayed and superimposed. Up-to-date and informative, this unique book will be welcomed as a practical and indispensable reference guide by all those who use ICP-AES for the analysis of rare earth elements.Trade Review"... a valuable reference guide ..." * Journal of the American Chemical Society, Vol 122, No 18, p 4534 *"... a very useful book to have in the laboratory ..." * Talanta, 52, 2000, 955 *"... a helpful aid to any user of ICP with a special interest in the rare earth elements ..." * Journal of Analytical Atomic Spectrometry, 2000, 15 *"... a welcome addition to the current literature ... should occupy a space in any reference library." * Trends in Analytical Chemistry, Vol 20, No 1, 2001 *"... valuable and indispensable ..." * Fresenius Journal of Analytical Chemistry, 3/2000, M97-M98 *"... I ... recommend in terms of its coverage, and clarity of presentation. The inclusion of the coincidence profiles on compact disk is an additional and useful bonus." * www.rsc.org/anlreview/2000 *Table of ContentsI Introduction: Overview; Interpretation; Apparatus and Procedures; II Reference; III Coincidence Tables: Selected prominent lines of REEs and their detection limits and BECs; Tables of interfering lines; Tables of coincidence parameters; Tables of recommended analysis lines with matrices of REEs; IV Spectral Coincidence Profiles; Appendix.

    1 in stock

    £95.00

  • Microtas 2004

    Royal Society of Chemistry Microtas 2004

    1 in stock

    Book SynopsisThe Eighth International Conference on Miniaturized Systems in Chemistry and Life Science - MicroTas 2004 - is an annual meeting focusing on the research, development and application of miniaturized technologies and methodologies in chemistry and life science. The conference is celebrating its tenth anniversary after the first workshop at the University of Twente, The Netherlands in 1994. This research field is rapidly developing and changing towards a domain where core competence areas such as microfluidics, micro- and nanotechnology, materials science, chemistry, biology, and medicine are melting together to a truly interdisciplinary meeting place. This volume is the second in a two volume set, a valuable reference collection to all working in this field.Table of ContentsParticle Sorting; Motormolecules; Cell Positioning; MEMS; Applications I; Microfluidics I; Nanotechnology; Others; Fluid Pumping; Proteomics; Cell Culture I; Nanochannels; Particles; Optical Detection; Applications II; Microfluidics II; Author Index; Key Word Index.

    1 in stock

    £94.95

  • Electrochemical Impedance Spectroscopy

    John Wiley & Sons Inc Electrochemical Impedance Spectroscopy

    1 in stock

    Book SynopsisProvides fundamentals needed to apply impedance spectroscopy to a broad range of applications with emphasis on obtaining physically meaningful insights from measurements.Table of ContentsPreface to the Second Edition xvii Preface to the First Edition xix Acknowledgments xxiii The Blind Men and the Elephant xxv A Brief Introduction to Impedance Spectroscopy xxix History of Impedance Spectroscopy xxxvii I Background 1 1 Complex Variables 3 1.1 Why Imaginary Numbers? 3 1.2 Terminology 4 1.3 Operations Involving Complex Variables 5 1.4 Elementary Functions of Complex Variables 16 Problems 22 2 Differential Equations 25 2.1 Linear First-Order Differential Equations 25 2.2 Homogeneous Linear Second-Order Differential Equations 29 2.3 Nonhomogeneous Linear Second-Order Differential Equations 32 2.4 Chain Rule for Coordinate Transformations 36 2.5 Partial Differential Equations by Similarity Transformations 38 2.6 Differential Equations with Complex Variables 42 Problems 43 3 Statistics 45 3.1 Definitions 45 3.2 Error Propagation 53 3.3 Hypothesis Tests 59 Problems 70 4 Electrical Circuits 73 4.1 Passive Electrical Circuits 73 4.2 Fundamental Relationships 79 4.3 Nested Circuits 80 4.4 Mathematical Equivalence of Circuits 82 4.5 Graphical Representation of Circuit Response 82 Problems 85 5 Electrochemistry 87 5.1 Resistors and Electrochemical Cells 87 5.2 Polarization Behavior for Electrochemical Systems 90 5.3 Definitions of Potential 106 5.4 Rate Expressions 107 5.5 Transport Processes 111 5.6 Potential Contributions 117 5.7 Capacitance Contributions 120 5.8 Further Reading 124 Problems 125 6 Electrochemical Instrumentation 127 6.1 The Ideal Operational Amplifier 127 6.2 Elements of Electrochemical Instrumentation 129 6.3 Electrochemical Interface 131 Problems 135 II Experimental Considerations 137 7 Experimental Methods 139 7.1 Steady-State Polarization Curves 139 7.2 Transient Response to a Potential Step 140 7.3 Analysis in Frequency Domain 141 7.4 Comparison of Measurement Techniques 154 7.5 Specialized Techniques 155 Problems 160 8 Experimental Design 163 8.1 Cell Design 163 8.2 Experimental Considerations 168 8.3 Instrumentation Parameters 181 Problems 186 III Process Models 187 9 Equivalent Circuit Analogs 189 9.1 General Approach 189 9.2 Current Addition 190 9.3 Potential Addition 196 Problems 201 10 Kinetic Models 203 10.1 General Mathematical Framework 203 10.2 Electrochemical Reactions 205 10.3 Multiple Independent Electrochemical Reactions 218 10.4 Coupled Electrochemical Reactions 221 10.5 Electrochemical and Heterogeneous Chemical Reactions 229 Problems 235 11 Diffusion Impedance 237 11.1 Uniformly Accessible Electrode 238 11.2 Porous Film 239 11.3 Rotating Disk 249 11.4 Submerged Impinging Jet 259 11.5 Rotating Cylinders 262 11.6 Electrode Coated by a Porous Film 264 11.7 Impedance with Homogeneous Chemical Reactions 271 11.8 Dynamic Surface Films 280 Problems 290 12 Impedance of Materials 291 12.1 Electrical Properties of Materials 291 12.2 Dielectric Response in Homogeneous Media 292 12.3 Cole-Cole Relaxation 295 12.4 Geometric Capacitance 295 12.5 Dielectric Response of Insulating Non-Homogenous Media 297 12.6 Mott-Schottky Analysis 298 Problems 305 13 Time-Constant Dispersion 307 13.1 Transmission Line Models 307 13.2 Geometry–Induced Current and Potential Distributions 325 13.3 Electrode Surface Property Distributions 337 13.4 Characteristic Dimension for Frequency Dispersion 358 13.5 Convective Diffusion Impedance at Small Electrodes 359 13.6 Coupled Charging and Faradaic Currents 365 13.7 Exponential Resistivity Distributions 378 Problems 381 14 Constant–Phase Elements 383 14.1 Mathematical Formulation for a CPE 383 14.2 When is a Time–Constant Distribution a CPE? 384 14.3 Origin of Distributions Resulting in a CPE 388 14.4 Approaches for Extracting Physical Properties 389 14.5 Limitations to the Use of the CPE 404 Problems 406 15 Generalized Transfer Functions 409 15.1 Multi-Input/Multi-Output Systems 409 15.2 Transfer Functions Involving Exclusively Electrical Quantities 417 15.3 Transfer Functions Involving Nonelectrical Quantities 422 Problems 429 16 Electrohydrodynamic Impedance 431 16.1 Hydrodynamic Transfer Function 433 16.2 Mass-Transport Transfer Function 436 16.3 Kinetic Transfer Function for Simple Electrochemical Reactions 441 16.4 Interface with a 2-D or 3-D Insulating Phase 442 Problems 454 IV Interpretation Strategies 455 17 Methods for Representing Impedance 457 17.1 Impedance Format 459 17.2 Admittance Format 468 17.3 Complex-Capacitance Format 474 17.4 Effective Capacitance 478 Problems 482 18 Graphical Methods 483 18.1 Based on Nyquist Plots 484 18.2 Based on Bode Plots 491 18.3 Based on Imaginary Part of the Impedance 495 18.4 Based on Dimensionless Frequency 496 18.5 System–Specific Applications 502 18.6 Overview 512 Problems 515 19 Complex Nonlinear Regression 517 19.1 Concept 517 19.2 Objective Functions 519 19.3 Formalism of Regression Strategies 521 19.4 Regression Strategies for Nonlinear Problems 524 19.5 Influence of Data Quality on Regression 527 19.6 Initial Estimates for Regression 533 19.7 Regression Statistics 533 Problems 536 20 Assessing Regression Quality 539 20.1 Methods to Assess Regression Quality 539 20.2 Application of Regression Concepts 540 Problems 555 V Statistical Analysis 557 21 Error Structure of Impedance Measurements 559 21.1 Error Contributions 559 21.2 Stochastic Errors in Impedance Measurements 560 21.3 Bias Errors 566 21.4 Incorporation of Error Structure 570 21.5 Measurement Models for Error Identification 572 Problems 583 22 The Kramers-Kronig Relations 585 22.1 Methods for Application 585 22.2 Mathematical Origin 590 22.3 The Kramers-Kronig in an Expectation Sense 601 Problems 605 VI Overview 607 23 An Integrated Approach to Impedance Spectroscopy 609 23.1 Flowcharts for Regression Analysis 609 23.2 Integration of Measurements, Error Analysis, and Model 610 23.3 Application 613 Problems 619 VII Reference Material 621 A Complex Integrals 623 A.1 Definition of Terms 623 A.2 Cauchy-Riemann Conditions 625 A.3 Complex Integration 627 Problems 633 B Tables of Reference Material 635 C List of Examples 637 List of Symbols 643 References 655 Index 684

    1 in stock

    £100.76

  • Flavor Fragrance and Odor Analysis

    Taylor & Francis Ltd Flavor Fragrance and Odor Analysis

    1 in stock

    Book SynopsisThere are many advantages to stir bar sorptive extraction (SBSE) for isolating and concentrating flavor-active chemicals from foods, including its simplicity and wide application appeal. Written from a practical, problem-solving perspective, the second edition of Flavor, Fragrance, and Odor Analysis highlights this powerful technique and emphasizes the range of applications available.Topics discussed include Sequential SBSE, a novel extraction procedure A simplified method for switching from one-dimensional to two-dimensional GC-MS How analytical sensitivity and recovery of phenolic compounds can be improved using aqueous acylation prior to SBSE GC-MS Analyzing and combating off-flavors caused by metabolites from microorganisms A technique for measuring synergy effects between odorants The identification of the characterizing aroma-active compounds of tropical fruits with high economic potentTrade Review"…state-of-the-art....Present[s] the most recent methods in flavor, off-flavor, and malodor analysis." —Food Trade Review "This book is very interesting and covers many facets of flavor analysis. … will surely contribute to the advancement of flavor and fragrance research."—IASI Polytechnic Magazine " … an interesting book that makes a significant contribution to advancing this fascinating topic."—Chromatographia "…state-of-the-art....Present[s] the most recent methods in flavor, off-flavor, and malodor analysis." —Food Trade Review "This book is very interesting and covers many facets of flavor analysis. … will surely contribute to the advancement of flavor and fragrance research."—IASI Polytechnic Magazine " … an interesting book that makes a significant contribution to advancing this fascinating topic."—Chromatographia Table of ContentsGeneral applications. Techniques to maximize analyte sensitivity. Techniques to maximize GC peak resolution and MS identification. New GC-olfactometry approaches for studying synergistic effects of odor active compounds in food and beverage samples. Reference chapters describing formation of odor active chemicals in food systems.

    1 in stock

    £84.99

  • Practical Skills in Forensic Science

    Pearson Education Limited Practical Skills in Forensic Science

    1 in stock

    Book SynopsisALAN LANGFORD is Senior Lecturer and Programme Leader in Criminology and Forensic Sciences at Northumbria University, UK; JOHN DEAN is Professor of Analytical and Environmental Sciences and Director of the Graduate School at Northumbria University, UK; ROB REED is Professor of Biomedical Science and Director of Undergraduate Science Programs at CQUniversity, Australia; DAVID HOLMES is Director of Collaborative Programs in Applied Sciences at Northumbria University, UK; JONATHAN WEYERS is Director of Quality Assurance at the University of Dundee, UK; and ALLAN JONES is Senior Lecturer and Chancellor's Award Fellow in Ecology, Environmental Science and Zoology at the University of Dundee, UK.Table of Contents 1 Essentials of practical work 2 Health and safety 3 Making measurements and observations 4 SI units and their use 5 Scientific method and design of experiments 6 Working with liquids 7 Basic laboratory procedures 8 Principles of solution chemistry 9 pH and buffer solutions 10 Introduction to microscopy 11 Setting up and using microscopes 12 Sample preparation 13 DNA analysis – fundamental principles 14 Chromatography 15 Mass spectrometry 16 Basic spectroscopy 17 Atomic spectroscopy 18 X-ray fluorescence spectroscopy 19 Infrared and Raman spectroscopy 20 Nuclear magnetic resonance spectroscopy 21 Immunoassay 22 Electrophoresis 23 Personnel and recording the scene 24 Collecting evidence – basic principles 25 Digital evidence 26 Investigating fingerprints 27 Footwear marks and impressions 28 Investigating other marks 29 Document analysis 30 Analysis of biological fluids 31 DNA analysis – forensic applications 32 Analysis of hair 33 Analysis of skeletal remains 34 Forensic odontology 35 Forensic entomology 36 Forensic botany 37 Alcohol analysis 38 Forensic toxicology 39 Bulk drug analysis 40 Analysis of paint 41 Analysis of glass 42 Analysis of fibres 43 Firearms and ballistic evidence 44 Analysis of fires and explosions 45 Finding and citing published information 46 Using online resources 47 Evaluating information 48 Word processors, databases and other packages 49 Using Spreadsheets 50 Fundamental principles of quantitative chemical analysis 51 Calibration and quantitative analysis 52 Using graphs 53 Presenting data in tables 54 Hints for solving numerical problems 55 Descriptive statistics 56 Choosing and using statistical tests 57 Chemometrics and advanced statistics 58 General aspects of scientific writing 59 Giving a spoken presentation 60 Writing a forensic statement and presenting evidence in court 61 Reporting practical and project work 62 Writing essays, literature surveys and reviews 63 Organising a poster display 64 The importance of transferable skills 65 Managing your time 66 Working with others 67 Taking notes from lectures and texts 68 Learning and revising effectively 69 Assessments and exams 70 Preparing your curriculum vitae

    1 in stock

    £51.99

  • Principles of Instrumental Analysis

    Cengage Learning, Inc Principles of Instrumental Analysis

    1 in stock

    Book SynopsisPRINCIPLES OF INSTRUMENTAL ANALYSIS, 7th Edition, places an emphasis on operating principles of each type of instrument, its optimal area of application, its sensitivity, its precision, and its limitations. You'll also learn about elementary analog and digital electronics, computers, and the treatment of analytical data.Table of Contents1. Introduction. Section I: MEASUREMENT BASICS. 2. Electrical Components and Circuits. 3. Operational Amplifiers in Chemical Instrumentation. 4. Digital Electronics and Computers. 5. Signals and Noise. Instrumental Analysis in Action: The Electronic Analytical Laboratory. Section II: ATOMIC SPECTROSCOPY. 6. An Introduction to Spectrometric Methods. 7. Components of Optical Instruments. 8. An Introduction to Optical Atomic Spectrometry. 9. Atomic Absorption and Atomic Fluorescence Spectrometry. 10. Atomic Emission Spectrometry. 11. Atomic Mass Spectrometry. 12. Atomic X-Ray Spectrometry. Instrumental Analysis in Action: Monitoring Mercury. Section III: MOLECULAR SPECTROSCOPY. 13. An Introduction to Ultraviolet-Visible Molecular Absorption Spectrometry. 14. Applications of Ultraviolet-Visible Molecular Absorption Spectrometry. 15. Molecular Luminescence Spectrometry. 16. An Introduction to Infrared Spectrometry. 17. Applications of Infrared Spectrometry. 18. Raman Spectroscopy. 19. Nuclear Magnetic Resonance Spectroscopy. 20. Molecular Mass Spectrometry. 21. Surface Characterization by Spectroscopy and Microscopy. Instrumental Analysis in Action: Assessing the Authenticity of the Vinland Map: Surface Analysis in the Service of History, Art, and Forensics. Section IV: ELECTROANALYTICAL CHEMISTRY. 22. An Introduction to Electroanalytical Chemistry. 23. Potentiometry. 24. Coulometry. 25. Voltammetry. Instrumental Analysis in Action: Measuring the Parts to Understand the Whole: The Microphysiometer. Section V: SEPARATION METHODS. 26. An Introduction to Chromatographic Separations. 27. Gas Chromatography. 28. High-Performance Liquid Chromatography. 29. Supercritical Fluid Chromatography and Extraction. 30. Capillary Electrophoresis, Electrochromatography, and Field-Flow Fractionation. Instrumental Analysis in Action: The Bisphenol A Controversy. Section VI: MISCELLANEOUS METHODS. 31. Thermal Methods. 32. Radiochemical Methods. 33. Automated Methods of Analysis. 34. Particle Size Determination. Instrumental Analysis in Action: The John F. Kennedy Assassination. Appendices. Appendix 1: Evaluation of Analytical Data. Appendix 2: Activity Coefficients. Appendix 3: Some Standard and Formal Electrode Potentials. Appendix 4: Compounds Recommended for the Preparation of Standard Solutions of Some Common Elements. Answers to Selected Problems. Index.

    1 in stock

    £81.99

  • Analytical Separation Science

    Royal Society of Chemistry Analytical Separation Science

    1 in stock

    Book SynopsisStudents and practising analysts will find the majority of all the important aspects of analytical separation sciences in this teaching textbook.

    1 in stock

    £76.00

  • Circular Dichroism and Magnetic Circular

    Royal Society of Chemistry Circular Dichroism and Magnetic Circular

    1 in stock

    Book SynopsisCD and MCD spectroscopy can provide key information about the conformations and electronic states of chromophore containing molecules. However, the theory has remained too challenging and inaccessible for many organic chemists and biochemists and only a few researchers have carried out detailed quantitative analyses of their spectral data. This is not surprising as people who excel at spectroscopic theory usually lack the skills set required to design and synthesise the molecules that would be most appropriate for describing and explaining the theory of CD and MCD spectroscopy. Most of the books that have been written on the subject have, therefore, been based on very dense sets of mathematical equations. This timely book rectifies that situation by summarizing the relationship between the different types of spectra and by describing in detail the qualitative and quantitative methods which can readily be used to analyse CD and MCD spectral data. During the last decade the authors have successfully synthesized several molecules to illustrate key points related to the theory of CD and MCD spectroscopy, resulting in this definitive book providing key practical knowledge in a readily accessible style. It is aimed primarily at organic chemists and biochemists and provides the required reading for researchers active in the field. In the introduction, the book describes the types of information that can be derived from CD and MCD spectroscopy. After a detailed explanation of the theory of electronic absorption spectroscopy, it then provides practical in depth examples of the various analytical methods that can be carried out with CD and MCD spectral data. This makes the theory of these techniques much more accessible for researchers who do not specialise in physical chemistry.Trade Review"Their explanations of the CD techniques are complete enough to satisfy an expert spectroscopist while at the same time written in a way that can be understood by a non-expert organic chemist that is well versed in introductory physical chemistry." -- Babak Borhan * Angew. Chem. Int. Ed. 2012, 51, 10446 *"...this present treatment is useful to a broad audience interested in the technique." -- Babak Borhan * Angew. Chem. Int. Ed. 2012, 51, 10446 *"...can act as a good reference book for both students and researchers, especially organic chemists interested in applying circular dichroism spectroscopy methods for the characterization of their synthetic products." -- Babak Borhan * Angew. Chem. Int. Ed. 2012, 51, 10446 *Table of ContentsIntroduction: CD and MCD Spectroscopy; Theory of Electronic Absorption Spectroscopy; Theoretical Framework of CD Spectroscopy; Theoretical Framework of MCD Spectroscopy; Examples of CD spectra; Examples of MCD spectra; Appendices

    1 in stock

    £94.99

  • High-Temperature Liquid Chromatography: A User's

    Royal Society of Chemistry High-Temperature Liquid Chromatography: A User's

    1 in stock

    Book SynopsisHigh-temperature liquid chromatography has attracted much interest in recent years but has not yet recognized its full potential in the chromatographic community. There is a widespread reluctance in industry to use temperature to speed up the separation process, influence the selectivity of a separation or implement novel detection techniques. However, the technology has now matured and could revolutionize chromatography as we see it today. Better equipment, such as heating systems able to generate faster heating rates, is becoming more readily available. Also, columns based on silica gel, which can withstand higher temperatures for an extended period, are now being introduced. Nevertheless, further technological and methodical efforts are needed to establish the method in a regulated environment like the pharmaceutical industry. This is the only text to cover all the practical aspects, as well as the underlying theoretical principles, of setting up an HPLC system for high temperature operation. It is not intended solely for academics but will also benefit the researcher interested in more practical considerations. The author is a recognized expert and has conducted several studies with partners from industry to validate the method. Many real examples from these studies have been included in the book. The aim is to support practitioners in the creation of their own protocols without the need to rely solely on trial and error. The book starts with a brief definition of high temperature liquid chromatography before going on to cover: system set up; the heating system; mobile phase considerations; suitable stationary phases; method development using temperature programming; analyte stability, and special hyphenation techniques using superheated water as a mobile phase. In each chapter, experimental data is used to illustrate the main statements and the advantages over conventional HPLC are evaluated. The book concludes with a critical outlook on further developments and applications underlining the necessary advances needed to make high temperature HPLC more robust.Trade ReviewHigh-temperature liquid chromatography has attracted much interest in recent years but has not yet recognized its full potential in the chromatographic community. There is a widespread reluctance in industry to use temperature to speed up the separation process, influence the selectivity of a separation or implement novel detection techniques. However, the technology has now matured and could revolutionize chromatography as we see it today. Better equipment, such as heating systems able to generate faster heating rates, is becoming more readily available. Also, columns based on silica gel, which can withstand higher temperatures for an extended period, are now being introduced. Nevertheless, further technological and methodical efforts are needed to establish the method in a regulated environment like the pharmaceutical industry. This is the only text to cover all the practical aspects, as well as the underlying theoretical principles, of setting up an HPLC system for high-temperature operation. It is not intended solely for academics but will also benefit the researcher interested in more practical considerations. The author is a recognized expert and has conducted several studies with partners from industry to validate the method. Many real examples from these studies have been included in the book. The aim is to support practitioners in the creation of their own protocols without the need to rely solely on trial and error. The book starts with a brief definition of high-temperature liquid chromatography before going on to cover: system set up; the heating system; mobile phase considerations; suitable stationary phases; method development using temperature programming; analyte stability, and special hyphenation techniques using superheated water as a mobile phase. In each chapter, experimental data is used to illustrate the main statements and the advantages over conventional HPLC are evaluated. The book concludes with a critical outlook on further developments and applications underlining the necessary advances needed to make high-temperature HPLC more robust.Table of ContentsA brief definition of high-temperature liquid chromatography; System set up for high temperature liquid chromatography; The heating system; Mobile phase considerations; Suitable stationary phases; Method development using temperature programming Analyte stability; Special hyphenation techniques using superheated water as a mobile phase; A critical outlook

    1 in stock

    £115.89

  • Solid State NMR: Principles, Methods, and

    Wiley-VCH Verlag GmbH Solid State NMR: Principles, Methods, and

    1 in stock

    Book SynopsisSolid State NMR A thorough and comprehensive textbook covering the theoretical background, experimental approaches, and major applications of solid-state NMR spectroscopyNuclear Magnetic Resonance (NMR) spectroscopy is a powerful non-destructive technique capable of providing information about the molecular structure and dynamics of molecules. Alongside solution-state NMR, a well-established technique to study chemical structures and investigate physico-chemical properties of molecules in solutions, solid-state NMR (SSNMR) offers many exciting possibilities for the analysis of solid and soft materials across scientific fields. SSNMR shows unique capabilities for a detailed investigation of structural and dynamic properties of materials over wide space and time ranges. For this reason, and thanks to significant advances in the past several years, the application of SSNMR to materials is rapidly increasing in disciplines such as chemistry, physics, and materials and life sciences.Solid State NMR: Principles, Methods, and Applications offers a systematic introduction to the theory, methodological concepts, and major experimental methods of SSMR spectroscopy. Exploring the unique potential of SSNMR for the structural and dynamic characterization of soft and either amorphous or crystalline solid materials, this comprehensive textbook provides foundational knowledge and recent developments of SSNMR, covering physical and theoretical background, experimental methods, and applications to pharmaceuticals, polymers, inorganic and hybrid materials, liquid crystals, and model membranes. Written by two expert authors to ensure a clear and consistent presentation of the subject, this textbook: Includes a brief introduction to the historical aspects and broad theoretical background of solid-state NMR spectroscopy Provides helpful illustrations to explain the various SSNMR concepts and methods Features accessible descriptive text with self-consistent use of quantum mechanics Covers the experimental aspects of SSNMR spectroscopy and in particular a description of many useful pulse sequences Contains references to relevant literature Solid State NMR: Principles, Methods, and Applications is the ideal textbook for university courses on SSNMR, advanced spectroscopies, and a valuable single-volume reference for spectroscopists, chemists, and researchers in the field of materials.Table of ContentsForeword xiii Preface xv Foreword xvii 1 Introductory NMR Concepts 1 1.1 Historical Aspects 1 1.2 Basic Description of NMR Spectroscopy 5 1.2.1 Nuclear Spins and Nuclear Zeeman Effect 8 1.2.2 Spin Ensembles 11 1.2.3 Single Pulse Experiment, Bloch Equations, and Fourier Transformation 17 1.2.4 Populations and Coherences 27 1.3 Liquid-state NMR Spectroscopy: Basic Concepts 29 1.3.1 Chemical Shift 29 1.3.2 Indirect Spin–Spin Coupling and Spin Decoupling 32 1.3.3 Nuclear Spin Relaxation 38 1.3.4 Nuclear Overhauser Effect 44 1.4 Liquid-state NMR Spectroscopy: Some Experiments 47 1.4.1 Relaxation Experiments 47 1.4.2 Insensitive Nuclei Enhanced by Polarization Transfer 53 1.4.3 2D NMR Spectroscopy 53 1.4.4 Chemical Exchange 57 1.5 Solid Materials and NMR Spectroscopy 63 References 69 2 Mathematical and Quantum-mechanical Tools 73 2.1 Definitions and Basic Concepts 73 2.1.1 Operators and Functions 73 2.1.2 Eigenvalue Equations 74 2.1.3 Eigenstates and Superposition States: Pure and Mixed Ensembles 75 2.1.4 Nuclear Spin and Angular Momentum 76 2.2 Rotations and Frame Transformations 77 2.2.1 Active and Passive Transformations 78 2.2.2 Rotation Operators 78 2.2.3 Rotation Matrices and Euler Angles 79 2.3 Time-Independent Features: Energy Levels and Related Aspects 81 2.3.1 Time-Independent Schrödinger Equation and Spin Hamiltonians 81 2.3.2 Time-Independent Perturbation Theory 81 2.3.3 Matrix Representation of Operators and Density Matrix Theory 83 2.3.3.1 Isolated Nucleus with Spin 1/2 84 2.3.3.2 Isolated Nucleus with Spin 1 87 2.3.3.3 Pair of Coupled Nuclei with Spin 1/2 87 2.3.4 Spin Temperature 89 2.4 Dealing with Time Dependence 90 2.4.1 Time-Dependent Schrödinger and Liouville–von Neumann Equations 90 2.4.2 Average Hamiltonian Theory 91 References 93 3 Nuclear Spin Interactions 95 3.1 Introduction 95 3.2 Interactions with External Magnetic Fields 97 3.3 Internal Interactions 100 3.3.1 Shielding or Chemical Shift Interaction 100 3.3.2 Knight Shift Interaction 105 3.3.3 Quadrupolar Interaction 106 3.3.4 Dipolar Coupling 112 3.3.5 Indirect Spin–Spin (J) Coupling 116 3.3.6 Paramagnetic Coupling 117 References 119 4 Broadline NMR Spectroscopy 121 4.1 Introductory Remarks 121 4.2 Finite Pulse Duration and Adiabatic Pulses 133 4.2.1 Finite Pulse Duration: Excitation Profile and Spectral Distortions 133 4.2.2 Adiabatic Pulses 138 4.3 Inhomogeneous and Homogeneous Line Broadening Mechanisms 141 4.4 Dilute Spin-1/2 Nuclei 142 4.4.1 Broadline NMR Spectra 142 4.4.2 Cross-polarization 149 4.4.2.1 Pulse Sequence and Hartmann–Hahn Conditions 149 4.4.2.2 CP Explained by AHT 151 4.4.2.3 CP Explained by the Thermodynamic Model 157 4.4.2.4 CP Dynamics 160 4.4.2.5 CP-related Techniques 167 4.4.3 Heteronuclear Spin Decoupling 169 4.4.3.1 CWHeteronuclear Spin Decoupling Explained by AHT 171 4.4.3.2 Beyond CW: Off-resonance Effects and Pulse Decoupling Schemes 172 4.4.4 Echo Experiments 176 4.5 Abundant Spin-1/2 Nuclei 184 4.5.1 Broadline NMR Spectra 184 4.5.2 Spin Diffusion 187 4.5.2.1 Fick’s Equation of Diffusion 187 4.5.2.2 The Goldman–Shen Experiment 189 4.5.2.3 Influence of Spin Diffusion on Spin-Lattice Relaxation Times 191 4.5.3 Moment 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Properties 270 5.1.5.3 Pulse Sequences for Spectral Editing: Distinguishing Rare Nuclei With Different Chemical Bonds 271 5.1.5.4 Pulse Sequences for Quantitative Determinations: CP vs SPE 273 5.2 Abundant Spin-1/2 Nuclei 275 5.2.1 Sample Rotation 275 5.2.2 Multiple Pulse Experiments 275 5.2.3 Combined Pulse and Sample Rotation Experiments 282 5.3 Quadrupolar Nuclei 289 5.3.1 Sample Rotation 289 5.3.2 Integer Spin Nuclei 290 5.3.3 Half-integer Spin Nuclei 291 5.3.3.1 CT Spectra 294 5.3.3.2 Double Angle Rotation 297 5.3.3.3 Satellite Transition Spectroscopy 300 5.3.4 Sensitivity Enhancement 301 References 305 6 2D Solid-State NMR Spectroscopy 309 6.1 Basic Concepts 311 6.1.1 Basic Structure of 2D Experiments 311 6.1.2 Need for Recoupling 313 6.1.3 Double (Multiple) Quantum Spectroscopy 316 6.2 Experiments Based on Chemical Shift Anisotropy 317 6.2.1 MAH, MAT, 5-π, and Related Experiments 318 6.2.2 STAG, S3, SASS 321 6.2.3 VACSY 322 6.2.4 TOSS–ReverseTOSS and 2D-PASS 322 6.2.5 CSA Amplification Methods 324 6.2.6 Pulse Sequences Recoupling Chemical Shift Anisotropy 326 6.2.7 Pulse Sequences for Abundant Spin-1/2 Nuclei 326 6.2.8 Rotary Resonance (RR) 328 6.3 Experiments Based on Heteronuclear Dipolar Coupling 329 6.3.1 Heteronuclear Correlation Through Dipolar Interaction 330 6.3.2 Separated Local Field (SLF) 333 6.3.3 Rotary Resonance Recoupling (R3) 337 6.3.4 REDOR 337 6.3.5 REAPDOR and TRAPDOR 348 6.3.6 TEDOR 352 6.3.7 HARDSHIP 354 6.4 Experiments Based on Homonuclear Dipolar Coupling 355 6.4.1 WISE 355 6.4.2 Rotational Resonance (R2) 358 6.4.3 Broadband Homonuclear Dipolar Recoupling 360 6.4.3.1 DRAMA and MELODRAMA 362 6.4.3.2 RFDR and SEDRA 365 6.4.3.3 2Q-HORROR, MSD-HORROR, and DREAM 366 6.4.3.4 BABA 370 6.4.3.5 Symmetry-based Recoupling Schemes: C7 and POST-C7 370 6.4.3.6 Dipolar Truncation and High-order Recoupling Schemes 371 6.4.4 Homonuclear Correlation Through Dipolar Interaction 372 6.5 Experiments Based on J-coupling 375 6.5.1 Heteronuclear Correlation Through J-coupling 376 6.5.2 Homonuclear Correlation Through J-coupling 378 6.6 Experiments Based on Quadrupolar Interaction 380 6.6.1 Nutation 380 6.6.2 DAH and DAS 381 6.6.3 MQMAS 384 6.6.4 STMAS 388 References 391 7 Molecular Dynamics by Solid-State NMR 397 7.1 Experimental Observables and Motional Timescales 399 7.1.1 Spectral Lineshapes 399 7.1.1.1 High-Resolution Spectra 400 7.1.1.2 Powder Spectra 401 7.1.1.3 Spectra Acquired by “Exchange” Experiments 403 7.1.2 Relaxation Times in Solids 404 7.1.2.1 Spin–Spin Relaxation Times 406 7.1.2.2 Spin–Lattice Relaxation Times of Abundant Nuclei 409 7.1.2.3 Spin–Lattice Relaxation Times of Rare Nuclei 410 7.1.2.4 Dipolar and Quadrupolar Spin–Lattice Relaxation Times 411 7.1.2.5 Theory of Relaxation 412 7.1.3 Absolute Frequency Regimes 416 7.2 Motional Models 419 7.2.1 Models for Lineshape Analysis 419 7.2.2 Spectral Densities 422 7.2.3 Dependence of Correlation Times on Temperature 423 7.3 Broadline Experiments 424 7.3.1 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Parkin and Alan Brailsford 10.1 Introduction 219 10.1.1 Forensic Application of Mass Spectrometry 221 10.2 Theory of the Technique 223 10.2.1 Principles of Mass Spectrometry 223 10.2.2 Sample Introduction 224 10.2.3 Modes of Sample Ionisation 225 10.2.3.1 Electron Ionisation 225 10.2.3.2 Chemical Ionisation 227 10.2.3.3 Electrospray Ionisation 230 10.2.3.4 Atmospheric Pressure Chemical Ionisation 231 10.2.3.5 Desorption and Ambient Methods 232 10.2.3.6 Matrix-Assisted Laser Desorption/Ionisation 232 10.2.3.7 Secondary Ion Mass Spectrometry 234 10.2.3.8 Desorption Electrospray Ionisation 234 10.2.3.9 Direct Analysis in Real Time 234 10.2.4 Ion Separation – Mass Analysers 235 10.2.4.1 Mass Range, Resolution and Accuracy 235 10.2.4.2 Magnetic Sector 236 10.2.4.3 Quadrupoles – Quadrupole Mass Filter 236 10.2.4.4 Quadrupole Ion Trap 237 10.2.4.5 Time of Flight 238 10.2.4.6 Fourier Transform Instruments – Ion Cyclotron Resonance 239 10.2.4.7 Fourier Transform Instruments – Orbitrap 240 10.2.4.8 Tandem Mass Spectrometry – Ion Fragmentation by Collision Induced Dissociation 241 10.2.4.9 Tandem Mass Analysers – Ion Traps 242 10.2.4.10 Tandem Mass Analysers – Triple Quadrupoles 242 10.2.4.11 Tandem Mass Analysers – Hybrid Instruments 242 10.2.5 Ion Detection 243 10.2.5.1 Electron Multipliers 243 10.2.5.2 Faraday Cup 244 10.2.6 Anatomy of a Mass Spectrum 244 10.2.6.1 The Molecular or Quasi-Molecular Ion 245 10.2.6.2 The Fragment Region 247 10.2.6.3 Full Scan Mass Spectra 247 10.2.6.4 Product Ion Spectra 248 10.2.6.5 Extracted Ion Chromatograms 248 10.2.6.6 Selected Ion Chromatograms and Multiple Reaction Monitoring 249 10.2.6.7 Precursor Ion Detection and Neutral Loss Scanning 252 10.3 Application to Analytes 252 10.4 Interpretation and Law 254 10.4.1 Chain of Custody 254 10.4.2 New Forensic Regulations 255 10.4.3 ID Criteria – Screen and Confirmation 255 10.4.4 Chromatographic Criteria 256 10.4.5 Mass Spectrometric Identification Criteria 256 10.5 Case Studies 257 10.5.1 Serial Killing by Poisoning 257 10.5.2 Surreptitious Insulin Administration 257 10.6 Forensic Developments 258 10.6.1 Beyond Blood and Urine 258 10.6.2 High Mass Accuracy Mass Spectrometry 259 10.6.3 Mobile Mass Spectrometers 260 References 261 11 Isotope Ratio Mass Spectrometry 267Sarah Benson and Kylie Jones 11.1 Forensic Introduction 267 11.2 Basis of the Technique 268 11.2.1 Isotopes 268 11.2.2 Isotopic Abundance and Delta Notation 268 11.2.3 Standards and Reference Materials 269 11.2.4 Isotopic Variability – Fractionation and Mixing 270 11.2.5 Isotopic Variability of Natural Materials 272 11.2.6 Instrumentation: Stable Isotope Ratio Mass Spectrometers 272 11.3 Introduction to the Isotope Ratio Mass Spectrometer 276 11.3.1 IRMS – Detection and Measurement 276 11.3.2 Sample Preparation 277 11.3.3 Bulk Stable Isotope Analysis 277 11.3.4 Bulk Measurements by Quantitative High Temperature Combustion 278 11.3.5 Bulk Measurements by Quantitative High Temperature Conversion 279 11.3.6 Compound Specific Isotope Analysis 279 11.4 Interpretation 280 11.5 Case Studies 281 11.6 Applications in Forensic Science 283 11.6.1 Distinguishing between Naturally Occurring and Synthetic Materials in Doping, e.g. Endogenous and Exogenous (Synthetic) Testosterone 284 11.6.2 Determining Authenticity and Predicting Geographical Origin of Food, Pharmaceuticals and Other Materials, e.g. Counterfeiting 284 11.6.3 Tracing the Geographic Origin and Movement of Wildlife, Persons and Materials 284 11.6.4 Identifying the Source of Environmental Contaminants 285 11.6.5 Determining the Geographical Origin of Plant Materials, e.g. Natural Illicit Drugs – Cannabis, Cocaine, and Heroin 285 11.6.6 Characterising Microorganisms 286 11.6.7 Determining Synthetic Pathways Used to Manufacture Illicit Drugs, e.g. Ecstasy and MDMA, Methamphetamine, and Amphetamine 286 11.6.8 Distinguishing between Two or More Samples of a Material to Infer Source or a Common Origin 287 11.6.9 Distinguishing Between Two or More Samples of Ignitable Liquids and Chemicals 287 11.6.10 Determining Source Through Association of Starting Materials and End Products, e.g. Explosives 288 11.7 Future of IRMS and Stable Isotopic Comparisons 288 References 288 Part III Chromatographic Techniques 295 12 Chromatographic Separation and Theory 297Sue Jickells and Shari Forbes 12.1 Introduction 297 12.2 Chromatography 298 12.2.1 Planar Chromatography 299 12.2.2 Column Chromatography 300 12.3 The Separation Process 300 12.3.1 Distribution Constant 303 12.3.2 Hold-Up Time (or Volume) 304 12.3.3 Retention Time (or Volume) 305 12.3.3.1 Retention Time and Sample Concentration 306 12.3.4 Retention Factor 306 12.3.5 Separation Factor 307 12.4 Separation Theory 307 12.4.1 Plate Theory 307 12.4.2 Theory versus Practice: Band Broadening 308 12.4.3 Rate Theory 311 12.4.3.1 Eddy Diffusion (A) 312 12.4.3.2 Longitudinal Diffusion (B) 313 12.4.3.3 Mass Transfer (C) 314 12.4.3.4 Non-Column Parameters Contributing to Band Broadening 316 12.5 Practical Applications of Chromatographic Theory 316 12.5.1 Optimising Chromatographic Separations 317 12.5.1.1 Resolution 317 12.5.1.2 GC 319 12.5.1.3 Mobile Phase 320 12.6 Conclusion 323 References 323 13 Gas Chromatography 327Shari Forbes 13.1 Introduction 327 13.2 Gas Chromatography Components 327 13.2.1 Mobile Phase System 328 13.2.2 Sample Injection System 329 13.2.2.1 Liquid Samples 330 13.2.2.2 Gases and Volatile Compounds 334 13.2.2.3 Gas Samples 334 13.2.2.4 Volatile Compounds: Headspace Analysis 335 13.2.2.5 Static Headspace Analysis 335 13.2.2.6 Dynamic Headspace Analysis 336 13.2.2.7 Pyrolysis GC 338 13.2.3 Columns and Chromatographic Separation 338 13.2.3.1 Column Selection 340 13.2.3.2 Column Temperature and Programming 341 13.2.4 Detectors and Detection Systems 343 13.2.4.1 Flame Ionisation Detectors 344 13.2.4.2 Electron Capture Detectors 345 13.2.4.3 Nitrogen–Phosphorous Detectors 345 13.2.4.4 Mass Spectrometric Detection Systems 346 13.3 Application to Analyte 348 13.3.1 Sample Derivatisation 348 13.3.2 Qualitative Analysis 350 13.3.3 Quantitative Analysis 351 13.3.3.1 Methods of Quantitative Analysis 353 13.4 Interpretation and Law 354 13.5 Case Studies 356 13.5.1 Case Study 1 356 13.5.2 Case Study 2 357 13.6 Forensic Developments 358 13.6.1 Multidimensional GC 358 13.6.2 Portable GC 361 References 362 14 High Performance Liquid Chromatography and Ultra-High Performance Liquid Chromatography Including Liquid Chromatography–Mass Spectrometry 365Sophie Turfus and Luke N. Rodda 14.1 Introduction 365 14.2 Components of an HPLC instrument and their Optimisation 368 14.2.1 Pump and Mixer 368 14.2.2 Autosampler and Inlet 370 14.2.3 Injector 370 14.2.4 Column 370 14.2.4.1 Stationary Phase 371 14.2.4.2 Column Dimensions 373 14.2.4.3 Particle Size 373 14.2.4.4 Pre-Column/Guard Column 373 14.2.5 Fittings 374 14.2.6 Mobile Phase 375 14.2.6.1 Mobile Phase A 376 14.2.6.2 Mobile Phase B 376 14.2.7 Effect of Temperature/Flow Rate 379 14.2.8 Detector 380 14.2.8.1 Mass Spectrometer 380 14.2.8.2 UV Detector 382 14.2.8.3 PDA Detector 383 14.3 Related Techniques 384 14.3.1 Ion Chromatography 384 14.3.2 Affinity Chromatography 384 14.3.3 Chiral Chromatography 385 14.4 Chromatography Theory 385 14.5 Detection 386 14.6 Coupling of Liquid Chromatography to Mass Spectrometry 388 14.7 Types of Analytes 390 14.7.1 Basic Analytes 390 14.7.2 Acidic Analytes 390 14.7.3 Proteins 391 14.7.4 DNA 391 14.7.5 Chiral Compounds 392 14.7.6 Bulk Drugs and High-Concentration Analytes 392 14.7.7 Low-Concentration Analytes 392 14.8 Accreditation and Method Validation 393 14.8.1 Use of Internal Standards 393 14.8.2 Effect of Sample Matrix 394 14.8.3 Ion Ratios 394 14.9 Interpretation of Results in the Forensic and Legal Context 394 14.10 Case Studies 396 14.10.1 Case Study 1: Post-Mortem Death Investigation – Poly-Drug Overdose 396 14.10.2 Case Study 2: Post-Mortem Death Investigation – No Derivatisation Needed for LC-MS 397 14.10.3 Case Study 3: Driving Under the Influence of Drugs – Increased Sensitivity with LC-MS 398 14.11 Forensic Developments 399 14.11.1 Column Switching and Two-Dimensional HPLC 399 14.11.2 Capillary Liquid Chromatography 401 14.11.3 Column-on-a-Chip Technologies 401 14.12 Conclusion 402 References 402 15 Capillary and Microchip Electrophoresis 407Lucas Blanes, Ellen Flávia Moreira Gabriel, Renata Mayumi Saito, Wendell Karlos Tomazelli Coltro, Nerida Cole, Philip Doble, Claude Roux and Robson Oliveira dos Santos 15.1 Capillary Electrophoresis: Introduction 407 15.2 Microchip-Capillary Electrophoresis 410 15.2.1 Sample Injection Modes in ME 410 15.3 Detection Systems 411 15.4 CE and ME in Forensic Analysis 412 15.5 Case Study: Lab-on-a-Chip Screening of Methamphetamine and Pseudoephedrine in Clandestine Laboratory Samples 412 15.5.1 Screening of Methamphetamine and Pseudoephedrine from Clandestine Laboratories 416 15.5.2 Interferents 416 15.5.3 Simulated Surface Swabs 418 15.6 Conclusions 418 Acknowledgements 419 References 419 Index 425

    1 in stock

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  • Practical Skills in Chemistry

    Pearson Education Limited Practical Skills in Chemistry

    1 in stock

    Book SynopsisJohn R Dean is Professor in Analytical and Environmental Sciences at the University of Northumbria at Newcastle Alan M Jones was Head of Chemical Sciences at the University of Northumbria at Newcastle, David Holmes is Associate Dean of the Keith B. Taylor Global Scholars Programme, St George's University School of Medicine (Grenada), based at the University of Northumbria at Newcastle Rob Reed is Adjunct Professor (Education & Science) at Central Queensland University, Australia Jonathan Weyers is Honorary Senior Lecturer at the University of Dundee Allan Jones is Chancellor's Award Fellow in Ecology, Environmental Science and Zoology at the University of Dundee. Table of ContentsContents List of boxes viiiPreface to the second edition xiGuided tour xiiFor the student xivAcknowledgements xvList of abbreviations xvi Study and examination skills 1. The importance of transferable skills 2. Managing your time 3. Working with others 4. Taking notes from lectures and texts 5. Learning and revising 6. Curriculum options, assessments and exams 7. Preparing your curriculum vitae Information technology and library resources8. Finding and citing published information 9. Evaluating information 10. Using online resources 11. Internet resources for chemistry 12. Using spreadsheets 13. Word processors, databases and other packages Communicating information 14. Organising a poster display15. Giving a spoken presentation 16. General aspects of scientific writing17. Writing essays 18. Reporting practical and project work 19. Writing literature surveys and reviews Fundamental laboratory techniques 20. Your approach to practical work 21. Health and safety 22. Working with liquids 23. Basic laboratory procedures I 24. Basic laboratory procedures II 25. Principles of solution chemistry 26. pH and buffer solutions The investigative approach27. Making and recording measurements28. SI units and their use 29. Scientific method and design of experiments 30. Project work Laboratory techniques31. Melting points 32. Recrystallisation 33. Solvent extraction 34. Distillation 35. Reflux 36. Evaporation 37. Inert atmosphere methods 38. Combinatorial chemistry Classical techniques 39. Qualitative techniques for inorganic analysis 40. Gravimetry41. Procedures in volumetric analysis 42. Acid–base titrations 43. Complexometric titrations 44. Redox titrations 45. Precipitation titrations Instrumental techniques 46. Fundamental principles of quantitative chemical analysis 47. Calibration and quantitative analysis 48. Basic spectroscopy 49. Atomic spectroscopy 50. X-ray fluorescence spectroscopy 51. Chromatography – basic principles 52. Gas and liquid chromatography 53. Electrophoresis54. Electroanalytical techniques55. Radioactive isotopes and their uses56. Infrared spectroscopy57. Nuclear magnetic resonance spectroscopy58. Mass spectrometry59. Thermal analysis Analysis and presentation of data 60. Using graphs 61. Presenting data in tables 62. Hints for solving numerical problems 63. Descriptive statistics 64. Choosing and using statistical tests 65. Drawing chemical structures 66. Chemometrics 67. Computational chemistry Answers to study exercises Index

    1 in stock

    £51.99

  • Forensic Radio Survey Techniques for Cell Site

    John Wiley & Sons Inc Forensic Radio Survey Techniques for Cell Site

    1 in stock

    Book SynopsisFORENSIC RADIO SURVEY TECHNIQUES FOR CELL SITE ANALYSIS Overview of the end-to-end process of planning, undertaking, and reporting of forensic radio surveying to support cell site analysis The newly updated and revised Second Edition of Forensic Radio Survey Techniques for Cell Site Analysis provides an overview of the end-to-end process of planning, undertaking, and reporting of forensic radio surveying to support the forensic discipline of cell site analysis. It starts by recapping and explaining, in an accessible way, the theory, structure, and operation of cellular communications networks, then moves on to describe the techniques and devices employed to undertake forensic radio surveys. Worked examples are used throughout to demonstrate the practical steps required to plan and undertake forensic radio surveys, including the methods used to analyze Table of ContentsAbout the Author xvii Preface xix Acknowledgements xxi Acknowledgements for the 2nd Edition xxiii Glossary xxv 1 Forensic Radio Surveys for Cell Site Analysis 1 1.1 Cell Site Analysis 1 1.2 Forensic Radio Surveying 1 2 Radio Theory 3 2.1 RF Propagation 3 2.2 Carrying Information on a Radio Signal 8 2.3 Radio Spectrum 10 2.4 RF Measurements 14 3 Wireless Technologies and Deployments 21 3.1 Coordinating Cellular Development 21 3.2 Evolution from 0G to 5G 21 3.3 3GPP Network Types 25 3.4 3GPP2 Network Types 26 3.5 Other Types of Network 26 3.6 Deployed Technologies by Region 29 3.7 Commonly Used Frequency Bands by Region 30 4 Cellular Theory 33 4.1 Pre-cellular Radiotelephone Networks 33 4.2 Radio Cells 33 4.3 Frequency Reuse 35 4.4 Cell Size and Coverage 36 4.5 Duplex Techniques 37 4.6 Multiple Access Techniques 38 4.7 Generic Network Architecture 41 4.8 Mobile Devices and SIMs 41 4.9 Radio Access Networks 43 4.10 Core Networks 50 4.11 Subscriber and Device Identifiers 55 4.12 Network Databases 59 4.13 Cell Sites 61 4.14 Antennas and Azimuths 66 4.15 Uptilt and Downtilt 68 4.16 Cell Types and Sizes 69 4.17 Cell Site Types and Uses 70 4.18 Single and Multi-frequency Networks 70 4.19 Cell Coverage Concepts 73 4.20 Small Cells and Closed Subscriber Groups 75 4.21 Network Activities 76 4.22 Idle Mode and Connected Mode 80 4.23 Cell Access Control 85 4.24 Location Updating (Idle Mode Mobility) 87 4.25 Handover (Connected Mode Mobility) 88 4.26 Network Sharing 89 5 3GPP Network Types 91 5.1 2G GSM Networks 91 5.2 3G UMTS/HSPA Networks 103 5.3 4G LTE Networks 118 5.4 5G NR Networks 135 6 Other Cellular Network Types 157 6.1 2G IS-95/cdmaOne 157 6.2 3G IS-2000/CDMA2000 1x RTT 158 6.3 3G CDMA2000 EV-DO 166 6.4 Surveying Other Technologies 168 6.5 Global Navigation Satellite Systems 188 7 Forensic Radio Surveys 191 7.1 Forensic Radio Survey Objectives 191 7.2 Forensic Radio Survey Terminology 191 7.3 Forensic Radio Survey Types and Techniques 192 7.4 Idle Mode versus Connected Mode Surveys 201 7.5 Additional Survey Techniques 208 7.6 Survey Preparation 213 7.7 Typical Survey Actions and Procedures 216 7.8 Survey Results: Checking and Confirmation 226 7.9 Survey Notes and Progress Maps 228 7.10 Survey Equipment Types 228 7.11 Raw Survey Results 233 7.12 Processing Survey Results 239 7.13 Understanding Survey Results 245 7.14 Storage of Survey Data 248 7.15 Quality and Best Practice 250 7.16 Summary of Typical Survey Results 254 8 Cell Site Analysis 259 8.1 Cell Site Concepts 259 8.2 Uses and Limitations of Cell Site Evidence 260 8.3 Regulation of Cell Site Analysis 267 8.4 Components of Cell Site Analysis 271 8.5 Call Detail Records 271 8.6 Sources of Cellular Coverage Data 283 8.7 Forensic Radio Surveys 284 8.8 Cell Site Reports 286 8.9 Call Schedules 291 8.10 Maps and Graphics 292 8.11 Report Checking and Peer Review 295 8.12 Professional and Expert Witnesses 295 8.13 Court Presentations 297 8.14 Support for 'Live' Investigations 300 8.15 Cell Site Analysis and Forensic RF Surveys 308 9 Summary and Practical Activities 311 9.1 Radio and Cellular Concepts 311 9.2 Cellular Identifiers 314 9.3 Cellular Network Types 321 9.4 Forensic Radio Surveys 329 9.5 Survey Results: Checking and Confirmation 336 9.6 Survey Notes and Progress Maps 337 9.7 Survey Results 337 9.8 Cell Site Analysis 343 9.9 End-to-End Process 346 9.10 Overall List of Events/Locations 347 9.11 Source Files Attribution List 348 9.12 Normalise Call Data into a Standard Format 348 9.13 Create an Overall Cell List 352 9.14 Creating a Case Overview Map 352 9.15 Compile Radio Survey Summary Tables 353 9.16 Creating Call and Cell Labels 358 9.17 Cell Site Mapping Presentations 359 9.18 Summary 362 9.19 Further Reading 362 References 363 Index 365

    1 in stock

    £108.00

  • Archaeological Chemistry

    Royal Society of Chemistry Archaeological Chemistry

    1 in stock

    Book SynopsisThe use of chemistry in archaeology can help archaeologists answer questions about the nature and origin of the many organic and inorganic finds recovered through excavation, providing valuable information about the social history of humankind. This textbook tackles the fundamental issues in chemical studies of archaeological materials. Examining the most widely used analytical techniques in archaeology, the third edition of this comprehensive textbook features a new chapter on proteomics, capturing significant developments in protein recognition for dating and characterisation. The textbook has been updated to encompass the latest developments in the field. The textbook explores several archaeological investigations in which chemistry has been employed in tracing the origins of or in studying artefacts, and includes chapters on obsidian, ceramics, glass, metals and resins. It is an essential companion to students in archaeological science and chemistry, as well as to archaeologists, and those involved in conserving human artefacts.Trade ReviewThis is a book which must be read by all serious students of archaeology and also by those like me who would like to know more about the past. -- Edward R. Adlard * Chromatographia *Table of ContentsThe Development of Archaeological Chemistry; Analytical Techniques Applied to Archaeological; Obsidian Characterization in the Eastern Mediterranean; The Geochemistry of Clays and the Provenance of Ceramics; The Chemistry, Corrosion and Provenance of Archaeological Glass; The Chemical Study of Metals – the Medieval and Later Brass Industry in Europe; The Chemistry and Use of Resinous Substances; Amino Acid Stereochemistry and the First Americans; Lead Isotope Geochemistry and the Trade in Metals; Proteins: Haemoglobin, Immunochemistry, and Proteomics; The Chemistry of Human Bone: Diet, Nutrition, Status and Mobility; The Detection of Small Biomolecules: Dairy Products in the Archaeological Record; Summary – Whiter Archaeological Chemistry?

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    £42.74

  • Basic Chemometrics For Analytical Chemists

    World Scientific Europe Ltd Basic Chemometrics For Analytical Chemists

    1 in stock

    Book Synopsis

    1 in stock

    £72.00

  • Forensic Analysis of Fire Debris and Explosives

    Springer Nature Switzerland AG Forensic Analysis of Fire Debris and Explosives

    1 in stock

    Book SynopsisThis text provides training on the fundamental tools and methodologies used in active forensic laboratories for the complicated analysis of fire debris and explosives evidence. It is intended to serve as a gateway for students and transitioning forensic science or chemistry professionals. The book is divided between the two disciplines of fire debris and explosives, with a final pair of chapters devoted to the interplay between the two disciplines and with other disciplines, such as DNA and fingerprint analysis. It brings together a multi-national group of technical experts, ranging from academic researchers to active practitioners, including members of some of the premier forensic agencies of the world. Readers will gain knowledge of practical methods of analysis and will develop a strong foundation for laboratory work in forensic chemistry. End-of-chapter questions based on relevant topics and real-world data provide a realistic arena for learners to test newly-acquired techniques.Table of Contents1. Introduction to instrumentation used in FD/E analysis (Kenyon Evans-Nguyen, Associate Professor, University of Tampa)2. Fire debris analysis: general introduction to how it is currently done (Mark Sandercock, Team Lead - Trace Evidence, Royal Canadian Mounted Police)3. Microbial degradation of ignitable liquids (Katherine Hutches, Forensic Chemist, Bureau of Alcohol, Tobacco, Firearms and Explosives)4. Background interferences in fire debris analysis (Jamie Baerncopf and Sherrie Thomas, Forensic Chemists, Bureau of Alcohol, Tobacco, Firearms and Explosives)5. Alternative Fuels: E85, biodiesel, vegetable oils, etc. (Doug Byron, Forensic & Scientific Testing, Inc and Raymond Kuk, Section Chief, Bureau of Alcohol, Tobacco, Firearms and Explosives)6. Variation in gasoline/general IL variation within classes (Susan Hetzel, Senior Analytical Chemist, SEA Limited and Mary Williams, Coordinator of Research Programs & Services, National Center for Forensic Science, University of Central Florida)7. Explosives analysis: general introduction to intact analysis of explosives (Hazel Hutson, Principal Case Officer, Defence Science and Technology Laboratory and Eamonn McGee, Senior Forensic Technologist, Centre of Forensic Sciences)8. Explosives analysis: introduction to post-blast analysis (Brittany Crane-Calhoun, Forensic Chemist, Bureau of Alcohol, Tobacco, Firearms and Explosives and Robert Mothershead II, Supervisory Chemist - Forensic Examiner, Federal Bureau of Investigation)9. Componentry (Kirk Yeager and Kathy Boyle, Forensic Chemists, Bureau of Alcohol, Tobacco, Firearms and Explosives)10. Battlefield Forensics (James Garcia, Head of Trace Analysis and Chemistry, Defense Forensic Science Center and Robert Ollis, Forensic Chemist, Defense Forensic Science Center)11. Fire debris/explosives overlap: flares/fusees, thermite, ANFO (Michelle Evans, Forensic Chemist, Bureau of Alcohol, Tobacco, Firearms and Explosives)

    1 in stock

    £67.49

  • The HPLC-MS Handbook for Practitioners

    Wiley-VCH Verlag GmbH The HPLC-MS Handbook for Practitioners

    1 in stock

    Book SynopsisFilling the gap for an expert text dealing exclusively with the practical aspects of HPLC-MS coupling, this concise, compact, and clear book provides detailed information to enable users to employ the method most efficiently. Following an overview of the current state of HPLC-MS and its instrumentation, the text goes on to discuss all relevant aspects of method development. A chapter on tips and tricks is followed by user reports on the advantages - and pitfalls - of applying the method in real-life scenarios. The whole is rounded off by a look at future developments by renowned manufacturers.Table of ContentsPreface XI The Structure of HPLC-MS for Practitioners XIII List of Contributors XV Part I Overview, Pitfalls, Hardware-Requirements 1 1 State of the Art in the LC/MS 3O. Schmitz 1.1 Introduction 3 1.2 Ionization Methods at Atmospheric Pressure 5 1.2.1 Overview of API Methods 6 1.2.2 ESI 6 1.2.3 APCI 8 1.2.4 APPI 9 1.2.5 APLI 10 1.2.6 Determination of Ion Suppression 11 1.2.7 Best Ionization for Each Question 11 1.3 Mass Analyzer 12 1.4 Future Developments 13 1.5 What Should You Look forWhen Buying a Mass Spectrometer? 14 References 15 2 Technical Aspects and Pitfalls of LC/MS Hyphenation 19M.M. Martin 2.1 Instrumental Requirements for LC/MS Analysis – Configuring the Right System for Your Analytical Challenge 20 2.1.1 (U)HPLC andMass Spectrometry – Not Just a Mere Front-End 20 2.1.2 UHPLC System Optimization – Gradient Delay and Extra-column Volumes 21 2.1.3 Does YourMass Spectrometer Fit Your Purpose? 33 2.1.4 Data Rates and Cycle Times ofModernMass Spectrometers 38 2.1.5 Complementary Information by Additional Detectors or Mass SpectrometryWon’t Save theWorld 39 2.2 LC/MS Method Development and HPLC Method Adaptation – How toMakeMy LC Fit forMS? 43 2.2.1 Method Development LC/MS – LC Fits theMS Purposes 44 2.2.2 Converting Classical HPLC Methods into LC/MS 53 2.3 Pitfalls and Error Sources – Sometimes Things Do GoWrong 54 2.3.1 No Signal at All 54 2.3.2 Inappropriate Ion Source Settings and Their Impact on the Chromatogram 56 2.3.3 Ion Suppression 58 2.3.4 Unknown Mass Signals in the Mass Spectrum 59 2.3.5 Instrumental Reasons for the Misinterpretation ofMass Spectra 65 2.4 Conclusion 68 2.5 Abbreviations 69 References 70 3 Aspects of the Development of Methods in LC/MS Coupling 73T. Teutenberg, T. Hetzel, C. Portner, S. Wiese, C. vom Eyser, andJ. Tuerk 3.1 Introduction 73 3.2 From Target to Screening Analysis 74 3.2.1 Target Analysis 74 3.2.2 Suspected-Target Screening 74 3.2.3 Non-target Screening 74 3.2.4 Comparable Overview of the Different Acquisition Modes 75 3.3 The Optimization of Parameters in Chromatography andMass Spectrometry 75 3.3.1 Requirements and Recommendations for HPLC/MS Analysis Taking DIN 38407-47 as an Example 75 3.3.2 The Definition of Critical Peak Pairs in the Context of HPLC/MS Coupling 77 3.3.3 The Separation of Polar Components fromthe Column Void Time 79 3.3.4 Determining the HPLC Method Parameters Using the Example of the Separation of Selected Pharmaceuticals 80 3.3.5 Carrying out Screening Experiments 84 3.3.6 Evaluation of the Data and Discussion of the Influencing Parameters 86 3.3.7 Using Simulation Software for Fine Optimization 98 3.3.8 Choosing the Stationary Phase Support 99 3.3.9 The Influence of the Inner Column Diameter and theMobile Phase Flow Rate 103 3.3.10 The Influence of the Injection Volume 104 3.3.11 Establishing theMass Spectrometric Parameters 115 3.3.12 Optimization of theMass Spectrometric Parameters 117 3.3.13 Quantification Using LC/MS 122 3.3.14 Screening Using LC/MS 128 3.3.15 Miniaturization – LC/MS Quo Vadis? 132 References 135 Part II Tips, Examples, Trends 139 4 LC/MS for Everybody/for Everything? – LC/MS Tips 141F. Mandel 4.1 Introduction 141 4.2 Tip Number 1 142 4.2.1 Choosing the Right LC/MS Interface 142 4.3 Tip Number 2 148 4.3.1 Which Mobile Phases Are Compatible with LC/MS? 148 4.4 Tip Number 3 149 4.4.1 Phosphate Buffer – The Exception 149 4.5 Tip Number 4 150 4.5.1 Paired Ions 150 4.5.2 Which “Antidote” Is Available? 151 4.5.3 Summary 152 4.6 Tip Number 5 152 4.6.1 Using Additives to Enhance Electrospray Ionization 152 4.6.2 Additives for APCI 153 4.6.3 Summary 154 4.7 Tip Number 6 154 4.7.1 How Can I Enhance Sensitivity of Detection? 154 4.8 Tip Number 7 155 4.8.1 No Linear Response and Poor Dynamic Range? 155 4.8.2 The Reasons 156 4.8.3 Possible Solutions 156 4.8.4 Summary 157 4.9 Tip Number 8 157 4.9.1 HowMuch MSn Do I Need? 157 4.9.2 Solutions 158 4.9.3 Summary 158 4.10 Need More Help? 166 References 167 Part III User Reports 169 5 LC Coupled to MS – a User Report 171A.Muller and A. Hofmann References 176 6 ProblemSolvingwithHPLC/MS– aPracticalViewfromPractitioners 177E. Fleischer 6.1 Introduction and Scope 177 6.2 Case Example 1 181 6.2.1 Investigation ofMethohexital Impurities and Decomposition Products 181 6.2.2 Sample Preparation 181 6.3 Case Example 2 183 6.3.1 Separation of Oligomers from Caprolactam, Multicomponent Separation of Impurities on a Gram Scale 183 6.4 Case Example 3 184 6.4.1 Preparation and Isolation of bis-Nalbuphine from Nalbuphine 184 6.5 Case Example 4 186 6.5.1 Isolation and Elucidation of Dopamine Impurities 186 7 LC/MS from the Perspective of a Maintenance Engineer 189O.Muller 7.1 Introduction and Historical Summary 189 7.2 Spray Techniques 190 7.3 Passage Through the Ion Path 191 7.4 The Analyzer 191 7.5 Maintenance 193 References 198 Part IV Vendor’s Reports 201 8 LC/MS – the Past, Present, and Future 203T.L. Sheehan and F. Mandel 9 Vendor’s Report – SCIEX 207D. Schleuder 10 Manufacturer Report – Thermo Fisher Scientific 213M.M. Martin 10.1 Liquid Chromatography for LC/MS 214 10.2 Mass Spectrometry for LC/MS 215 10.3 Integrated LC/MS Solutions 217 10.4 Software 217 References 219 About the Authors 221 Index 227

    1 in stock

    £70.51

  • Surface Analysis

    John Wiley & Sons Inc Surface Analysis

    Book SynopsisThis completely updated and revised second edition of Surface Analysis: The Principal Techniques, deals with the characterisation and understanding of the outer layers of substrates, how they react, look and function which are all of interest to surface scientists. Within this comprehensive text, experts in each analysis area introduce the theory and practice of the principal techniques that have shown themselves to be effective in both basic research and in applied surface analysis. Examples of analysis are provided to facilitate the understanding of this topic and to show readers how they can overcome problems within this area of study.Table of ContentsList of Contributors xv Preface xvii 1 Introduction 1John C. Vickerman 1.1 How do we Define the Surface? 1 1.2 How Many Atoms in a Surface? 2 1.3 Information Required 3 1.4 Surface Sensitivity 5 1.5 Radiation Effects – Surface Damage 7 1.6 Complexity of the Data 8 2 Auger Electron Spectroscopy 9Hans Jörg Mathieu 2.1 Introduction 9 2.2 Principle of the Auger Process 10 2.2.1 Kinetic Energies of Auger Peaks 11 2.2.2 Ionization Cross-Section 15 2.2.3 Comparison of Auger and Photon Emission 16 2.2.4 Electron Backscattering 17 2.2.5 Escape Depth 18 2.2.6 Chemical Shifts 19 2.3 Instrumentation 21 2.3.1 Electron Sources 22 2.3.2 Spectrometers 24 2.3.3 Modes of Acquisition 24 2.3.4 Detection Limits 29 2.3.5 Instrument Calibration 30 2.4 Quantitative Analysis 31 2.5 Depth Profile Analysis 33 2.5.1 Thin Film Calibration Standard 34 2.5.2 Depth Resolution 36 2.5.3 Sputter Rates 37 2.5.4 Preferential Sputtering 40 2.5.5 λ-Correction 41 2.5.6 Chemical Shifts in AES Profiles 42 2.6 Summary 43 References 44 Problems 45 3 Electron Spectroscopy for Chemical Analysis 47Buddy D. Ratner and David G. Castner 3.1 Overview 47 3.1.1 The Basic ESCA Experiment 48 3.1.2 A History of the Photoelectric Effect and ESCA 48 3.1.3 Information Provided by ESCA 49 3.2 X-ray Interaction withMatter, the Photoelectron Effect and Photoemission from Solids 50 3.3 Binding Energy and the Chemical Shift 52 3.3.1 Koopmans’ Theorem 53 3.3.2 Initial State Effects 53 3.3.3 Final State Effects 57 3.3.4 Binding Energy Referencing 58 3.3.5 Charge Compensation in Insulators 60 3.3.6 Peak Widths 61 3.3.7 Peak Fitting 62 3.4 Inelastic Mean Free Path and Sampling Depth 63 3.5 Quantification 67 3.5.1 Quantification Methods 68 3.5.2 Quantification Standards 70 3.5.3 Quantification Example 71 3.6 Spectral Features 73 3.7 Instrumentation 80 3.7.1 Vacuum Systems for ESCA Experiments 80 3.7.2 X-ray Sources 82 3.7.3 Analyzers 84 3.7.4 Data Systems 86 3.7.5 Accessories 88 3.8 Spectral Quality 88 3.9 Depth Profiling 89 3.10 X–Y Mapping and Imaging 94 3.11 Chemical Derivatization 96 3.12 Valence Band 96 3.13 Perspectives 99 3.14 Conclusions 100 Acknowledgements 101 References 101 Problems 109 4 Molecular Surface Mass Spectrometry by SIMS 113John C. Vickerman 4.1 Introduction 113 4.2 Basic Concepts 116 4.2.1 The Basic Equation 116 4.2.2 Sputtering 116 4.2.3 Ionization 121 4.2.4 The Static Limit and Depth Profiling 123 4.2.5 Surface Charging 124 4.3 Experimental Requirements 125 4.3.1 Primary Beam 125 4.3.2 Mass Analysers 131 4.4 Secondary Ion Formation 140 4.4.1 Introduction 140 4.4.2 Models of Sputtering 143 4.4.3 Ionization 149 4.4.4 Influence of the Matrix Effect in Organic Materials Analysis 151 4.5 Modes of Analysis 155 4.5.1 Spectral Analysis 155 4.5.2 SIMS Imaging or Scanning SIMS 166 4.5.3 Depth Profiling and 3D Imaging 173 4.6 Ionization of the Sputtered Neutrals 183 4.6.1 Photon Induced Post-Ionization 184 4.6.2 Photon Post-Ionization and SIMS 190 4.7 Ambient Methods of Desorption Mass Spectrometry 194 References 199 Problems 203 5 Dynamic SIMS 207David McPhail and Mark Dowsett 5.1 Fundamentals and Attributes 207 5.1.1 Introduction 207 5.1.2 Variations on a Theme 211 5.1.3 The Interaction of the Primary Beam with the Sample 214 5.1.4 Depth Profiling 217 5.1.5 Complimentary Techniques and Data Comparison 224 5.2 Areas and Methods of Application 226 5.2.1 Dopant and Impurity Profiling 226 5.2.2 Profiling High Concentration Species 227 5.2.3 Use of SIMS in Near Surface Regions 230 5.2.4 Applications of SIMS Depth Profiling in Materials Science 233 5.3 Quantification of Data 233 5.3.1 Quantification of Depth Profiles 233 5.3.2 Fabrication of Standards 239 5.3.3 Depth Measurement and Calibration of the Depth Scale 241 5.3.4 Sources of Error in Depth Profiles 242 5.4 Novel Approaches 246 5.4.1 Bevelling and Imaging or Line Scanning 246 5.4.2 Reverse-Side Depth Profiling 250 5.4.3 Two-Dimensional Analysis 251 5.5 Instrumentation 252 5.5.1 Overview 252 5.5.2 Secondary Ion Optics 253 5.5.3 Dual Beam Methods and ToF 254 5.5.4 Gating 254 5.6 Conclusions 256 References 257 Problems 267 6 Low-Energy Ion Scattering and Rutherford Backscattering 269Edmund Taglauer 6.1 Introduction 269 6.2 Physical Basis 271 6.2.1 The Scattering Process 271 6.2.2 Collision Kinematics 272 6.2.3 Interaction Potentials and Cross-sections 275 6.2.4 Shadow Cone 278 6.2.5 Computer Simulation 281 6.3 Rutherford Backscattering 284 6.3.1 Energy Loss 284 6.3.2 Apparatus 287 6.3.3 Beam Effects 289 6.3.4 Quantitative Layer Analysis 290 6.3.5 Structure Analysis 293 6.3.6 Medium-Energy Ion Scattering (MEIS) 297 6.3.7 The Value of RBS and Comparison to Related Techniques 298 6.4 Low-Energy Ion Scattering 300 6.4.1 Neutralization 300 6.4.2 Apparatus 303 6.4.3 Surface Composition Analysis 307 6.4.4 Structure Analysis 316 6.4.5 Conclusions 323 Acknowledgement 324 References 324 Problems 330 Key Facts 330 7 Vibrational Spectroscopy from Surfaces 333Martyn E. Pemble and Peter Gardner 7.1 Introduction 333 7.2 Infrared Spectroscopy from Surfaces 334 7.2.1 Transmission IR Spectroscopy 335 7.2.2 Photoacoustic Spectroscopy 340 7.2.3 Reflectance Methods 342 7.3 Electron Energy Loss Spectroscopy (EELS) 361 7.3.1 Inelastic or ‘Impact’ Scattering 362 7.3.2 Elastic or ‘Dipole’ Scattering 365 7.3.3 The EELS (HREELS) Experiment 367 7.4 The Group Theory of Surface Vibrations 368 7.4.1 General Approach 368 7.4.2 Group Theory Analysis of Ethyne Adsorbed at a Flat, Featureless Surface 369 7.4.3 Group Theory Analysis of Ethyne Adsorbed at a (100) Surface of an FCC Metal 373 7.4.4 The Expected Form of the RAIRS and Dipolar EELS (HREELS) Spectra 374 7.5 Laser Raman Spectroscopy from Surfaces 375 7.5.1 Theory of Raman Scattering 376 7.5.2 The Study of Collective Surface Vibrations (Phonons) using Raman Spectroscopy 377 7.5.3 Raman Spectroscopy from Metal Surfaces 379 7.5.4 Spatial Resolution in Surface Raman Spectroscopy 380 7.5.5 Fourier Transform Surface Raman Techniques 380 7.6 Inelastic Neutron Scattering (INS) 381 7.6.1 Introduction to INS 381 7.6.2 The INS Spectrum 382 7.6.3 INS Spectra ofHydrodesesulfurization Catalysts 382 7.7 Sum-Frequency Generation Methods 383 References 386 Problems 389 8 Surface Structure Determination by Interference Techniques 391Christopher A. Lucas 8.1 Introduction 391 8.1.1 Basic Theory of Diffraction – Three Dimensions 392 8.1.2 Extension to Surfaces – Two Dimensions 398 8.2 Electron Diffraction Techniques 402 8.2.1 General Introduction 402 8.2.2 Low Energy Electron Diffraction 403 8.2.3 Reflection High Energy Electron Diffraction (RHEED) 418 8.3 X-ray Techniques 424 8.3.1 General Introduction 424 8.3.2 X-ray Adsorption Spectroscopy 427 8.3.3 Surface X-ray Diffraction (SXRD) 447 8.3.4 X-ray Standing Waves (XSWs) 456 8.4 Photoelectron Diffraction 464 8.4.1 Introduction 464 8.4.2 Theoretical Considerations 465 8.4.3 Experimental Details 469 8.4.4 Applications of XPD and PhD 470 References 474 9 Scanning Probe Microscopy 479Graham J. Leggett 9.1 Introduction 479 9.2 Scanning Tunnelling Microscopy 480 9.2.1 Basic Principles of the STM 481 9.2.2 Instrumentation and Basic Operation Parameters 487 9.2.3 Atomic Resolution and Spectroscopy: Surface Crystal and Electronic Structure 489 9.3 Atomic Force Microscopy 511 9.3.1 Basic Principles of the AFM 511 9.3.2 Chemical Force Microscopy 524 9.3.3 Friction Force Microscopy 526 9.3.4 Biological Applications of the AFM 532 9.4 Scanning Near-Field Optical Microscopy 537 9.4.1 Optical Fibre Near-Field Microscopy 537 9.4.2 Apertureless SNOM 541 9.5 Other Scanning Probe Microscopy Techniques 542 9.6 Lithography Using Probe Microscopy Methods 544 9.6.1 STM Lithography 544 9.6.2 AFM Lithography 545 9.6.3 Near-Field Photolithography 549 9.6.4 The ‘Millipede’ 550 9.7 Conclusions 551 References 552 Problems 559 10 The Application of Multivariate Data Analysis Techniques in Surface Analysis 563Joanna L.S. Lee and Ian S. Gilmore 10.1 Introduction 563 10.2 Basic Concepts 565 10.2.1 Matrix and Vector Representation of Data 565 10.2.2 Dimensionality and Rank 567 10.2.3 Relation to Multivariate Analysis 568 10.2.4 Choosing the Appropriate Multivariate Method 568 10.3 Factor Analysis for Identification 569 10.3.1 Terminology 570 10.3.2 Mathematical Background 570 10.3.3 Principal Component Analysis 571 10.3.4 Multivariate Curve Resolution 579 10.3.5 Analysis of Multivariate Images 582 10.4 Regression Methods for Quantification 591 10.4.1 Terminology 591 10.4.2 Mathematical Background 592 10.4.3 Principal Component Regression 594 10.4.4 Partial Least Squares Regression 595 10.4.5 Calibration, Validation and Prediction 596 10.4.6 Example – Correlating ToF–SIMS Spectra with PolymerWettability Using PLS 598 10.5 Methods for Classification 600 10.5.1 Discriminant Function Analysis 601 10.5.2 Hierarchal Cluster Analysis 602 10.5.3 Artificial Neural Networks 603 10.6 Summary and Conclusion 606 Acknowledgements 608 References 608 Problems 611 Appendix 1 Vacuum Technology for Applied Surface Science 613Rod Wilson A1.1 Introduction: Gases and Vapours 613 A1.2 The Pressure Regions of Vacuum Technology and their Characteristics 619 A1.3 Production of a Vacuum 622 A1.3.1 Types of Pump 622 A1.3.2 Evacuation of a Chamber 634 A1.3.3 Choice of Pumping System 635 A1.3.4 Determination of the Size of Backing Pumps 636 A1.3.5 Flanges and their Seals 636 A1.4 Measurement of Low Pressures 637 A1.4.1 Gauges for Direct Pressure Measurement 638 A1.4.2 Gauges Using Indirect Means of Pressure Measurement 640 A1.4.3 Partial Pressure Measuring Instruments 644 Acknowledgement 647 References 647 Appendix 2 Units, Fundamental Physical Constants and Conversions 649 A2.1 Base Units of the SI 649 A2.2 Fundamental Physical Constants 650 A2.3 Other Units and Conversions to SI 651 References 652 Index 653

    £52.20

  • Understanding Bioanalytical Chemistry

    John Wiley & Sons Inc Understanding Bioanalytical Chemistry

    Book SynopsisThe title captures the ethos and content precisely. It brings basic chemistry into real life with examples that illustrate how chemical principals are inherent to bioanalytical procedures, making them accessible to readers with a background in life sciences. Microbiology Today, July 2009 a good overview of the basic strategies to tackle the complexity of analysis in biological environments and provides some illustrative examples for a better understanding of the theoretical concepts provides a fundamental introduction to the tools adopted by life and health scientists in the evolving and exciting new age of omics specifically applied to the diagnosis, treatment, cure and prevention of disease Analytical and Bioanalytical Chemistry, October 2009 Although chemistry is core to the life and health sciences, it is often viewed as a challenging subject. Conventional textbooks tend to present chemistry in a way that is not always easily accessible to stTrade Review"The authors have attempted to create a text that is more palatable for undergraduate cohorts, and they have succeeded well in this aim. … [A] useful introductory text on the fundamentals of bioanalytical chemistry." (Australian Biochemist, December 2009) "This book provides a good introduction to the bioanalysis world … .The authors have succeeded in using real-life examples to illustrate chemical principles and applications." (Analytical and Bioanalytical Chemistry, October 2009) "The title captures the ethos and content precisely. It brings basic chemistry into real life with examples that illustrate how chemical principals are inherent to bioanalytical procedures, making them accessible to readers with a background in life sciences." (Microbiology Today, July 2009)Table of ContentsPreface ix 1 Introduction to biomolecules 1 1.1 Overview of chemical and physical attributes of biomolecules 2 1.2 Classification of biomolecules 5 1.3 Features and characteristics of major biomolecules 6 1.4 Structure–function relationships 21 1.5 Significance of biomolecules in nature and science 21 2 Analysis and quantification of biomolecules 29 2.1 Importance of accurate determination of biomolecules 30 2.2 Major methods to detect and quantify biomolecules 33 2.3 Understanding mass, weight, volume and density 34 2.4 Understanding moles and molarity 38 2.5 Understanding solubility and dilutions 46 3 Transition metals in health and disease 53 3.1 Structure and characteristics of key transition metals 54 3.2 Importance of transition metals in physiological processes 60 3.3 Transition metals as mediators of disease processes 64 3.4 Therapeutic implications of transition metals 71 3.5 Determination of transition metals in nature 73 4 Ions, electrodes and biosensors 77 4.1 Impact of ions and oxidation–reduction reactions on physical and life processes 78 4.2 pH, biochemical buffers and physiological regulation 83 4.3 Chemical and physical sensors and biosensors 88 4.4 Important measurements using specific electrodes 91 4.5 Specific applications of biosensors in life and health sciences 93 5 Applications of spectroscopy 99 5.1 An introduction to spectroscopic techniques 100 5.2 Major types of spectroscopy 104 5.3 Principles and applications of ultraviolet/visible spectrophotometry 105 5.4 Principles and applications of infrared spectroscopy 113 5.5 Principles and applications of fluorescence spectrofluorimetry 118 6 Centrifugation and separation 123 6.1 Importance of separation methods to isolate biomolecules 124 6.2 Basic principles underlying centrifugation 126 6.3 Features and components of major types of centrifuge 129 6.4 Major centrifugation methods for bioanalysis 133 6.5 Flow cytometry: principles and applications of this core method of separation 136 7 Chromatography of biomolecules 141 7.1 Chromatography: a key method for separation and identification of biomolecules 142 7.2 Principles, types and modes of chromatography 143 7.3 Applications of chromatography in life and health sciences 153 7.4 High-performance liquid chromatography and advanced separation technologies 154 7.5 Additional state-of-the-art chromatography techniques 160 8 Principles and applications of electrophoresis 163 8.1 Principles and theory of electrophoretic separation 164 8.2 Major types of electrophoresis 165 8.3 Electrophoresis in practice 169 8.4 Applications of electrophoresis in life and health sciences 177 8.5 Advanced electrophoretic separation methodologies for genomics and proteomics 178 9 Applications of mass spectrometry 183 9.1 Major types of mass spectrometry 184 9.2 Understanding the core principles of mass spectrometry 186 9.3 Major types of mass spectrometry in practice 191 9.4 Mass spectrometry: a key tool for bioanalysis in life and health sciences 194 9.5 Mass spectrometry: future perspectives 196 10 Immunochemical techniques and biological tracers 199 10.1 Antibodies: the keys to immunochemical measurements 200 10.2 Analytical applications of biological tracers 208 10.3 Principles and applications of radioimmunoassay (RIA) 212 10.4 Principles and applications of enzyme-linked immunosorbent assay (ELISA) 216 10.5 Immunohistochemistry: an important diagnostic tool 221 11 Bioanalysis by magnetic resonance technologies: NMR and MRI 225 11.1 Nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI) technologies: key tools for the life and health sciences 226 11.2 Principles of NMR and the importance of this biomolecular analytical technique 229 11.3 Established and emerging applications of NMR 235 11.4 Principles and uses of MRI 236 11.5 MRI as a principal diagnostic and research tool 241 12 Bioanalytical approaches from diagnostic, research and pharmaceutical perspectives 247 12.1 Clinical genomics, proteomics and metabolomics 248 12.2 Clinical diagnosis and screening 251 12.3 Research and development 254 12.4 Emerging pharmaceutical products 258 12.5 Future perspectives 260 13 Self-Assessment 265 Appendix 1: International system of units (SI) and common prefixes 273 Appendix 2: The periodic table of the elements 275 Appendix 3: Common solvents and biological buffers 277 Appendix 4: Answers to self-assessment questions 279 Index 281

    £47.45

  • Light Scattering Size Exclusion Chromatography

    John Wiley & Sons Inc Light Scattering Size Exclusion Chromatography

    Book SynopsisA comprehensive, practical approach to three powerful methods of polymer analysis and characterization This book serves as a complete compendium of three important methods widely used for the characterization of synthetic and natural polymerslight scattering, size exclusion chromatography (SEC), and asymmetric flow field flow fractionation (A4F). Featuring numerous up-to-date examples of experimental results obtained by light scattering, SEC, and A4F measurements, Light Scattering, Size Exclusion Chromatography and Asymmetric Flow Field Flow Fractionation takes an all-in-one approach to deliver a complete and thorough explanation of the principles, theories, and instrumentation needed to characterize polymers from the viewpoint of their molar mass distribution, size, branching, and aggregation. This comprehensive resource: Is the only book gathering light scattering, size exclusion chromatography, and asymmetric flow field flow fractionation into a siTrade Review"The book is, essentially, quite readable and the abundance of figures will help the reader follow the discussions in the text. Most chapters, especially that on A4F, contain adequate references to the literature, including many to relatively recent publications." (Anal Bioanal Chem, 27 December 2011)Table of ContentsPreface. 1 Polymers. 1.1 Introduction. 1.2 Molecular Structure of Polymers. 1.2.1 Macromolecules in Dilute Solution. 1.3 Molar Mass Distribution. 1.3.1 Description of Molar Mass Distribution. 1.3.1.1 Distribution Functions. 1.3.1.2 Molar Mass Averages. 1.4 Methods for the Determination of Molar Mass. 1.4.1 Method of End Groups. 1.4.2 Osmometry. 1.4.2.1 Vapor Pressure Osmometry. 1.4.2.2 Membrane osmometry. 1.4.3 Dilute Solution Viscometry. 1.4.3.1 Properties of Mark-Houwink Exponent. 1.4.3.2 Molecular Size from Intrinsic Viscosity. 1.4.3.3 Dependence of Intrinsic Viscosity on Polymer Structure, Temperature and Solvent. 1.4.4 Matrix Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry. 1.4.5 Analytical Ultracentrifugation. 1.5 Keynotes. 1.6 References. 2 Light Scattering. 2.1 Theory and Basic Principles. 2.2 Types of Light Scattering. 2.2.1 Static Light Scattering. 2.2.1.1 Particle Scattering Functions. 2.2.1.2 Light Scattering Formalisms. 2.2.1.3 Processing the Experimental Data. 2.2.2 Dynamic Light Scattering. 2.3 Light Scattering Instrumentation. 2.4 Specific Refractive Index Increment. 2.5 Light Scattering in Batch and Chromatography Mode. 2.6 Parameters Affecting Accuracy of Molar Mass Determined by Light Scattering. 2.7 Examples of Light Scattering Measurement in Batch Mode. 2.8 Keynotes. 2.9 References. 3 Size Exclusion Chromatography. 3.1 Introduction. 3.2 Separation Mechanisms. 3.2.1 Steric Exclusion. 3.2.2 Restricted Diffusion. 3.2.3 Separation by Flow. 3.2.4 Peak Broadening and Separation Efficiency. 3.2.5 Secondary Separation Mechanisms. 3.3 Instrumentation. 3.3.1 Solvents. 3.3.2 Columns and Column Packing. 3.3.3 Detectors. 3.3.3.1 UV Detector. 3.3.3.2 Refractive Index Detector. 3.3.3.3 Infrared Detector. 3.3.3.4 Evaporative Light Scattering Detector. 3.3.3.5 Viscosity Detector. 3.3.3.6 Light Scattering Detector. 3.3.3.7 Other Types of Detectors. 3.4 Column Calibration. 3.4.1 Universal Calibration. 3.4.2 Flow Marker. 3.5 SEC Measurements and Data Processing. 3.5.1 Sample Preparation. 3.5.1.1 Sample Derivatization. 3.5.2 Determination of Molar Mass and Molar Mass Distribution. 3.5.3 Reporting Results. 3.5.4 Characterization of Chemical Composition of Copolymers and Polymer Blends. 3.5.5 Characterization of Oligomers. 3.5.6 Influence of Separation Conditions. 3.5.7 Accuracy, Repeatability and Reproducibility of SEC Measurements. 3.6 Applications of SEC. 3.7 Keynotes. 3.8 References. 4 Combination of SEC and Light Scattering. 4.1 Introduction. 4.2 Data Collection and Processing. 4.2.1 Processing MALS Data. 4.2.1.1 Debye Fit Method. 4.2.1.2 Zimm Fit Method. 4.2.1.3 Berry fit Method. 4.2.1.4 Random Coil Fit Method. 4.2.1.5 Influence of Light Scattering Formalism on Molar Mass and RMS Radius. 4.2.2 Determination of Molar Mass and RMS Radius Averages and Distributions. 4.2.3 Chromatogram Processing. 4.2.4 Influence of Concentration and Second Virial Coefficient. 4.2.5 Repeatability and Reproducibility. 4.2.6 Accuracy of Results. 4.3 Applications of SEC-MALS. 4.3.1 Determination of Molar Mass Distribution. 4.3.2 Fast Determination of Molar Mass. 4.3.3 Characterization of Complex Polymers. 4.3.3.1 Branched Polymers. 4.3.3.2 Copolymers and Polymer Blends. 4.3.4 Conformation Plots. 4.3.5 Mark-Houwink Plots. 4.4 Keynotes. 4.5 References. 5 Asymmetric Flow Field Flow Fractionation. 5.1 Introduction. 5.2 Theory and Basic Principles. 5.2.1 Separation Mechanisms. 5.2.2 Resolution and Band Broadening. 5.3 Instrumentation. 5.4 Measurements and Data Processing. 5.4.1 Influence of Separation Conditions. 5.4.1.1 Isocratic and Gradient Experiments. 5.4.1.2 Overloading. 5.4.2 Practical Measurements. 5.5 A4F Applications. 5.6 Keynotes. 5.7 References. 6 Characterization of Branched Polymers. 6.1 Introduction. 6.2 Detection and Characterization of Branching. 6.2.1 SEC Elution Behavior of Branched Polymers. 6.2.2 Distribution of Branching. 6.2.3 Average Branching Ratios. 6.2.4 Other Methods for the Identification and Characterization of Branching. 6.3 Examples of Characterization of Branching. 6.4 Keynotes. 6.5 References. Symbols. Abbreviations. Index.

    £93.56

  • Mass Spectrometry in Sports Drug Testing

    John Wiley & Sons Inc Mass Spectrometry in Sports Drug Testing

    Book Synopsis* Mass Spectrometry is a major tool to characterize, identify and detect hundreds of known and unknown drugs.Trade Review“Mass Spectrometry in Sports Drug Testing is an excellent textbook for anyone involved in the analytical characterization of illicit substances and abused drugs.” (Anal Bioanal Chem, 2011) Table of ContentsPreface. Acknowledgments. 1 History of Sports Drug Testing. 1.1 Historical Attempts of Artificial Performance Enhancement. 1.2 Background and Rationale of Doping Controls. 1.3 Early Detection Methods: Possibilities and Limitations of Assays Without Mass Spectrometry. 1.4 Introduction of Mass Spectrometry to Doping Control Analysis. References. 2. Mass Spectrometry and the List of Prohibited Substances and Methods of Doping. 2.1 Criteria for the Mass Spectrometric Identification of Prohibited Compounds. 2.2 Modern Mass Spectrometers in Doping Controls: Advantages and Disadvantages of Available Techniques. References. 3. Structure Characterization of Low Molecular Weight Target Analytes —Electron Ionization. 3.1 Stimulants. 3.2 Narcotics. 3.3 Anabolic Androgenic Steroids. 3.4 Selective Androgen Receptor Modulators (SARMs). 3.5 Diuretics. 3.6 β2-Agonists. 3.7 β-Receptor Blocking Agents. 3.8 Calcium-Channel Modulators (RYCALS). 3.9 Carbohydrate-Based Agents. References. 4. Structure Characterization of Low Molecular Weight Target Analytes: Electrospray Ionization. 4.1 Stimulants. 4.2 Narcotics. 4.3 Anabolic Androgenic Steroids. 4.4 Selective Androgen Receptor Modulators (SARMs). 4.5 Diuretics. 4.6 β2-Agonists. 4.7 Calcium-Channel Modulators (RYCALS). 4.8 Peroxisome-Proliferator Activated Receptor-δ (PPARδ) And Adenosine Monophosphate Activated Protein Kinase (AMPK) Agonists. 4.9 Hypoxia-Inducible Factor (HIF)-Stabilizers And Sirtuin Activators. 4.10 β-Receptor Blocking Agents. 4.11 Glucuronic Acid and Sulfate Conjugates of Target Analytes. References. 5. Structure Characterization of High Molecular Weight Target Analytes: Electrospray Ionization. 5.1 Human Chorionic Gonadotrophin (hCG). 5.2 Erythropoietins (EPO). 5.3 Synacthen. 5.4 Insulins. 5.5 Hemoglobin-Based Oxygen Carriers (HBOCs). 5.6 Human Growth Hormone (hGH). 5.7 Sermorelin (Geref). 5.8 Insulin-Like Growth Factor-1 (IGF-1). 5.9 Gonadorelin (LHRH). References. 6. Modern Mass Spectrometry-Based Analytical Assays. 6.1 GC-MS and Isotope Ratio Mass Spectrometry. 6.2 LC-MS/MS. References. 7. Limitations and Perspectives of Mass Spectrometry-Based Procedures in Doping Control Analysis. 7.1 Recombinant Biomolecules. 7.2 Unknown Compounds. 7.3 Profiling of Urine and/or Blood. 7.4 Alternative Specimens. References. Index.

    £95.36

  • Digital Forensics

    John Wiley and Sons Ltd Digital Forensics

    Book SynopsisThe vast majority of modern criminal investigations involve some element of digital evidence, from mobile phones, computers, CCTV and other devices. Digital Forensics: Digital Evidence in Criminal Investigations provides the reader with a better understanding of how digital evidence complements traditional scientific evidence and examines how it can be used more effectively and efficiently in a range of investigations. Taking a new approach to the topic, this book presents digital evidence as an adjunct to other types of evidence and discusses how it can be deployed effectively in support of investigations. The book provides investigators/SSMs/other managers with sufficient contextual and technical information to be able to make more effective use of digital evidence sources in support of a range of investigations. In particular, it considers the roles played by digital devices in society and hence in criminal activities. From this, it examines the role and nature of evidentTrade Review?This book presents digital evidence as an adjunct to other types of evidence and discusses how it can be deployed effectively in support of investigations.? (Reviews, May 2009)Table of ContentsPreface vii Acknowledgments xi List of Tables xii List of Figures xiii 1 Introduction 1 1.1 Key developments 1 1.2 Digital devices in society 5 1.3 Technology and culture 6 1.4 Comment 7 2 Evidential Potential of Digital Devices 9 2.1 Closed vs. open systems 10 2.2 Evaluating digital evidence potential 17 3 Device Handling 19 3.1 Seizure issues 21 3.2 Device identification 31 3.3 Networked devices 36 3.4 Contamination 40 4 Examination Principles 43 4.1 Previewing 43 4.2 Imaging 47 4.3 Continuity and hashing 48 4.4 Evidence locations 49 5 Evidence Creation 55 5.1 A seven-element security model 56 5.2 A developmental model of digital systems 60 5.3 Knowing 61 5.4 Unknowing 63 5.5 Audit and logs 68 6 Evidence Interpretation 69 6.1 Data content 69 6.2 Data context 83 7 Internet Activity 85 7.1 A little bit of history 85 7.2 The ISO/OSI model 86 7.3 The internet protocol suite 90 7.4 DNS 94 7.5 Internet applications 96 8 Mobile Devices 109 8.1 Mobile phones and PDAs 109 8.2 GPS 116 8.3 Other personal technology 118 9 Intelligence 119 9.1 Device usage 119 9.2 Profiling and cyberprofiling 121 9.3 Evaluating online crime: automating the model 124 9.4 Application of the formula to case studies 126 9.5 From success estimates to profiling 129 9.6 Comments 129 10 Case Studies and Examples 131 10.1 Introduction 131 10.2 Copyright violation 131 10.3 Missing person and murder 133 10.4 The view of a defence witness 137 Appendix A The “Aircraft Carrier” PC 141 Appendix B Additional Resources 145 B.1 Hard disc and storage laboratory tools 145 B.2 Mobile phone/PDA tools 146 B.3 Live CDs 146 B.4 Recommended reading 146 Appendix C SIM Card Data Report 149 References 157 Index 161

    £48.40

  • Handbook of Green Analytical Chemistry

    John Wiley & Sons Inc Handbook of Green Analytical Chemistry

    Book SynopsisThe emerging field of green analytical chemistry is concerned with the development of analytical procedures that minimize consumption of hazardous reagents and solvents, and maximize safety for operators and the environment.Trade Review“In conclusion, this is an interesting book for a reader who wants to expand their views on the topic, being edited by two of the most prolific contributors in the field, and carrying contributions from worldwide renowned groups on the subject. All aspects of the analytical process are covered, from sampling to waste management, while keeping an eye on the practical deployment of the method.” (Green Processing and Synthesis, 1 August 2012) Table of ContentsList of Contributors xv Preface xix Section I: Concepts 1 1 The Concept of Green Analytical Chemistry 3 Miguel de la Guardia and Salvador Garrigues 1.1 Green Analytical Chemistry in the frame of Green Chemistry 3 1.2 Green Analytical Chemistry versus Analytical Chemistry 7 1.3 The ethical compromise of sustainability 9 1.4 The business opportunities of clean methods 11 1.5 The attitudes of the scientific community 12 References 14 2 Education in Green Analytical Chemistry 17 Miguel de la Guardia and Salvador Garrigues 2.1 The structure of the Analytical Chemistry paradigm 17 2.2 The social perception of Analytical Chemistry 20 2.3 Teaching Analytical Chemistry 21 2.4 Teaching Green Analytical Chemistry 25 2.5 From the bench to the real world 26 2.6 Making sustainable professionals for the future 28 References 29 3 Green Analytical Laboratory Experiments 31 Suparna Dutta and Arabinda K. Das 3.1 Greening the university laboratories 31 3.2 Green laboratory experiments 33 3.2.1 Green methods for sample pretreatment 33 3.2.2 Green separation using liquid-liquid, solid-phase and solventless extractions 37 3.2.3 Green alternatives for chemical reactions 42 3.2.4 Green spectroscopy 45 3.3 The place of Green Analytical Chemistry in the future of our laboratories 52 References 52 4 Publishing in Green Analytical Chemistry 55 Salvador Garrigues and Miguel de la Guardia 4.1 A bibliometric study of the literature in Green Analytical Chemistry 56 4.2 Milestones of the literature on Green Analytical Chemistry 57 4.3 The need for powerful keywords 61 4.4 A new attitude of authors faced with green parameters 62 4.5 A proposal for editors and reviewers 64 4.6 The future starts now 65 References 66 Section II: The Analytical Process 67 5 Greening Sampling Techniques 69 José Luis Gómez Ariza and Tamara García Barrera 5.1 Greening analytical chemistry solutions for sampling 70 5.2 New green approaches to reduce problems related to sample losses, sample contamination, transport and storage 70 5.2.1 Methods based on flow-through solid phase spectroscopy 70 5.2.2 Methods based on hollow-fiber GC/HPLC/CE 71 5.2.3 Methods based on the use of nanoparticles 75 5.3 Greening analytical in-line systems 76 5.4 In-field sampling 77 5.5 Environmentally friendly sample stabilization 79 5.6 Sampling for automatization 79 5.7 Future possibilities in green sampling 80 References 80 6 Direct Analysis of Samples 85 Sergio Armenta and Miguel de la Guardia 6.1 Remote environmental sensing 85 6.1.1 Synthetic Aperture Radar (SAR) images (satellite sensors) 86 6.1.2 Open-path spectroscopy 86 6.1.3 Field-portable analyzers 90 6.2 Process monitoring: in-line, on-line and at-line measurements 91 6.2.1 NIR spectroscopy 92 6.2.2 Raman spectroscopy 92 6.2.3 MIR spectroscopy 93 6.2.4 Imaging technology and image analysis 93 6.3 At-line non-destructive or quasi non-destructive measurements 94 6.3.1 Photoacoustic Spectroscopy (PAS) 94 6.3.2 Ambient Mass Spectrometry (MS) 95 6.3.3 Solid sampling plasma sources 95 6.3.4 Nuclear Magnetic Resonance (NMR) 96 6.3.5 X-ray spectroscopy 96 6.3.6 Other surface analysis techniques 97 6.4 New challenges in direct analysis 97 References 98 7 Green Analytical Chemistry Approaches in Sample Preparation 103 Marek Tobiszewski, Agata Mechlinska and Jacek Namiesnik 7.1 About sample preparation 103 7.2 Miniaturized extraction techniques 104 7.2.1 Solid-phase extraction (SPE) 104 7.2.2 Solid-phase microextraction (SPME) 105 7.2.3 Stir-bar sorptive extraction (SBSE) 106 7.2.4 Liquid-liquid microextraction 106 7.2.5 Membrane extraction 108 7.2.6 Gas extraction 109 7.3 Alternative solvents 113 7.3.1 Analytical applications of ionic liquids 113 7.3.2 Supercritical fluid extraction 114 7.3.3 Subcritical water extraction 115 7.3.4 Fluorous phases 116 7.4 Assisted extractions 117 7.4.1 Microwave-assisted extraction 117 7.4.2 Ultrasound-assisted extraction 117 7.4.3 Pressurized liquid extraction 118 7.5 Final remarks 119 References 119 8 Green Sample Preparation with Non-Chromatographic Separation Techniques 125 María Dolores Luque de Castro and Miguel Alcaide Molina 8.1 Sample preparation in the frame of the analytical process 125 8.2 Separation techniques involving a gas–liquid interface 127 8.2.1 Gas diffusion 127 8.2.2 Pervaporation 127 8.2.3 Membrane extraction with a sorbent interface 130 8.2.4 Distillation and microdistillation 131 8.2.5 Head-space separation 131 8.2.6 Hydride generation and cold-mercury vapour formation 133 8.3 Techniques involving a liquid–liquid interface 133 8.3.1 Dialysis and microdialysis 133 8.3.2 Liquid–liquid extraction 134 8.3.3 Single-drop microextraction 137 8.4 Techniques involving a liquid–solid interface 139 8.4.1 Solid-phase extraction 139 8.4.2 Solid-phase microextraction 141 8.4.3 Stir-bar sorptive extraction 142 8.4.4 Continuous filtration 143 8.5 A Green future for sample preparation 145 References 145 9 Capillary Electrophoresis 153 Mihkel Kaljurand 9.1 The capillary electrophoresis separation techniques 153 9.2 Capillary electrophoresis among other liquid phase separation methods 155 9.2.1 Basic instrumentation for liquid phase separations 155 9.2.2 CE versus HPLC from the point of view of Green Analytical Chemistry 156 9.2.3 CE as a method of choice for portable instruments 159 9.2.4 World-to-chip interfacing and the quest for a ‘killer’ application for LOC devices 163 9.2.5 Gradient elution moving boundary electrophoresis and electrophoretic exclusion 165 9.3 Possible ways of surmounting the disadvantages of CE 167 9.4 Sample preparation in CE 168 9.5 Is capillary electrophoresis a green alternative? 169 References 170 10 Green Chromatography 175 Chi-Yu Lu 10.1 Greening liquid chromatography 175 10.2 Green solvents 176 10.2.1 Hydrophilic solvents 176 10.2.2 Ionic liquids 177 10.2.3 Supercritical Fluid Chromatography (SFC) 177 10.3 Green instruments 178 10.3.1 Microbore Liquid Chromatography (microbore LC) 179 10.3.2 Capillary Liquid Chromatography (capillary LC) 180 10.3.3 Nano Liquid Chromatography (nano LC) 181 10.3.4 How to transfer the LC condition from traditional LC to microbore LC, capillary LC or nano LC 182 10.3.5 Homemade micro-scale analytical system 183 10.3.6 Ultra Performance Liquid Chromatography (UPLC) 184 References 185 11 Green Analytical Atomic Spectrometry 199 Martín Resano, Esperanza García-Ruiz and Miguel A. Belarra 11.1 Atomic spectrometry in the context of Green Analytical Chemistry 199 11.2 Improvements in sample pretreatment strategies 202 11.2.1 Specific improvements 202 11.2.2 Slurry methods 204 11.3 Direct solid sampling techniques 205 11.3.1 Basic operating principles of the techniques discussed 205 11.3.2 Sample requirements and pretreatment strategies 207 11.3.3 Analyte monitoring: The arrival of high-resolution continuum source atomic absorption spectrometry 208 11.3.4 Calibration 210 11.3.5 Selected applications 210 11.4 Future for green analytical atomic spectrometry 213 References 215 12 Solid Phase Molecular Spectroscopy 221 Antonio Molina-Díaz, Juan Francisco García-Reyes and Natividad Ramos-Martos 12.1 Solid phase molecular spectroscopy: an approach to Green Analytical Chemistry 221 12.2 Fundamentals of solid phase molecular spectroscopy 222 12.2.1 Solid phase absorption (spectrophotometric) procedures 222 12.2.2 Solid phase emission (fluorescence) procedures 225 12.3 Batch mode procedures 225 12.4 Flow mode procedures 226 12.4.1 Monitoring an intrinsic property 227 12.4.2 Monitoring derivative species 231 12.4.3 Recent flow-SPMS based approaches 232 12.5 Selected examples of application of solid phase molecular spectroscopy 233 12.6 The potential of flow solid phase envisaged from the point of view of Green Analytical Chemistry 235 References 240 13 Derivative Techniques in Molecular Absorption, Fluorimetry and Liquid Chromatography as Tools for Green Analytical Chemistry 245 José Manuel Cano Pavón, Amparo García de Torres, Catalina Bosch Ojeda, Fuensanta Sánchez Rojas and Elisa I. Vereda Alonso 13.1 The derivative technique as a tool for Green Analytical Chemistry 245 13.1.1 Theoretical aspects 246 13.2 Derivative absorption spectrometry in the UV-visible region 247 13.2.1 Strategies to greener derivative spectrophotometry 248 13.3 Derivative fluorescence spectrometry 250 13.3.1 Derivative synchronous fluorescence spectrometry 251 13.4 Use of derivative signal techniques in liquid chromatography 254 References 255 14 Greening Electroanalytical Methods 261 Paloma Yáñez-Sedeño, José M. Pingarrón and Lucas Hernández 14.1 Towards a more environmentally friendly electroanalysis 261 14.2 Electrode materials 262 14.2.1 Alternatives to mercury electrodes 262 14.2.2 Nanomaterial-based electrodes 268 14.3 Solvents 270 14.3.1 Ionic liquids 271 14.3.2 Supercritical fluids 273 14.4 Electrochemical detection in flowing solutions 274 14.4.1 Injection techniques 274 14.4.2 Miniaturized systems 276 14.5 Biosensors 278 14.5.1 Greening biosurface preparation 278 14.5.2 Direct electrochemical transfer of proteins 281 14.6 Future trends in green electroanalysis 282 References 282 Section III: Strategies 289 15 Energy Savings in Analytical Chemistry 291 Mihkel Koel 15.1 Energy consumption in analytical methods 291 15.2 Economy and saving energy in laboratory practice 294 15.2.1 Good housekeeping, control and maintenance 295 15.3 Alternative sources of energy for processes 296 15.3.1 Using microwaves in place of thermal heating 297 15.3.2 Using ultrasound in sample treatment 299 15.3.3 Light as a source of energy 301 15.4 Using alternative solvents for energy savings 302 15.4.1 Advantages of ionic liquids 303 15.4.2 Using subcritical and supercritical fluids 303 15.5 Efficient laboratory equipment 305 15.5.1 Trends in sample treatment 306 15.6 Effects of automation and micronization on energy consumption 307 15.6.1 Miniaturization in sample treatment 308 15.6.2 Using sensors 310 15.7 Assessment of energy efficiency 312 References 316 16 Green Analytical Chemistry and Flow Injection Methodologies 321 Luis Dante Martínez, Soledad Cerutti and Raúl Andrés Gil 16.1 Progress of automated techniques for Green Analytical Chemistry 321 16.2 Flow injection analysis 322 16.3 Sequential injection analysis 325 16.4 Lab-on-valve 327 16.5 Multicommutation 328 16.6 Conclusions and remarks 334 References 334 17 Miniaturization 339 Alberto Escarpa, Miguel Ángel López and Lourdes Ramos 17.1 Current needs and pitfalls in sample preparation 340 17.2 Non-integrated approaches for miniaturized sample preparation 341 17.2.1 Gaseous and liquid samples 341 17.2.2 Solid samples 350 17.3 Integrated approaches for sample preparation on microfluidic platforms 353 17.3.1 Microfluidic platforms in sample preparation process 353 17.3.2 The isolation of analyte from the sample matrix: filtering approaches 356 17.3.3 The isolation of analytes from the sample matrix: extraction approaches 360 17.3.4 Preconcentration approaches using electrokinetics 365 17.3.5 Derivatization schemes on microfluidic platforms 372 17.3.6 Sample preparation in cell analysis 373 17.4 Final remarks 378 References 379 18 Micro- and Nanomaterials Based Detection Systems Applied in Lab-on-a-Chip Technology 389 Mariana Medina-Sánchez and Arben Merkoçi 18.1 Micro- and nanotechnology in Green Analytical Chemistry 389 18.2 Nanomaterials-based (bio)sensors 390 18.2.1 Optical nano(bio)sensors 391 18.2.2 Electrochemical nano(bio)sensors 393 18.2.3 Other detection principles 395 18.3 Lab-on-a-chip (LOC) technology 396 18.3.1 Miniaturization and nano-/microfluidics 396 18.3.2 Micro- and nanofabrication techniques 397 18.4 LOC applications 398 18.4.1 LOCs with optical detections 398 18.4.2 LOCs with electrochemical detectors 398 18.4.3 LOCs with other detections 399 18.5 Conclusions and future perspectives 400 References 401 19 Photocatalytic Treatment of Laboratory Wastes Containing Hazardous Organic Compounds 407 Edmondo Pramauro, Alessandra Bianco Prevot and Debora Fabbri 19.1 Photocatalysis 407 19.2 Fundamentals of the photocatalytic process 408 19.3 Limits of the photocatalytic treatment 408 19.4 Usual photocatalytic procedure in laboratory practice 408 19.4.1 Solar detoxification of laboratory waste 409 19.5 Influence of experimental parameters 411 19.5.1 Dissolved oxygen 411 19.5.2 pH 411 19.5.3 Catalyst concentration 412 19.5.4 Degradation kinetics 412 19.6 Additives reducing the e−/h+ recombination 412 19.7 Analytical control of the photocatalytic treatment 413 19.8 Examples of possible applications of photocatalysis to the treatment of laboratory wastes 413 19.8.1 Percolates containing soluble aromatic contaminants 414 19.8.2 Photocatalytic destruction of aromatic amine residues in aqueous wastes 414 19.8.3 Degradation of aqueous wastes containing pesticides residue 415 19.8.4 The peculiar behaviour of triazine herbicides 416 19.8.5 Treatment of aqueous wastes containing organic solvent residues 416 19.8.6 Treatment of surfactant-containing aqueous wastes 416 19.8.7 Degradation of aqueous solutions of azo-dyes 419 19.8.8 Treatment of laboratory waste containing pharmaceuticals 419 19.9 Continuous monitoring of photocatalytic treatment 420 References 420 Section IV: Fields of Application 425 20 Green Bioanalytical Chemistry 427 Tadashi Nishio and Hideko Kanazawa 20.1 The analytical techniques in bioanalysis 427 20.2 Environmental-responsive polymers 428 20.3 Preparation of a polymer-modified surface for the stationary phase of environmental-responsive chromatography 430 20.4 Temperature-responsive chromatography for green analytical methods 432 20.5 Biological analysis by temperature-responsive chromatography 432 20.5.1 Analysis of propofol in plasma using water as a mobile phase 434 20.5.2 Contraceptive drugs analysis using temperature gradient chromatography 435 20.6 Affinity chromatography for green bioseparation 436 20.7 Separation of biologically active molecules by the green chromatographic method 438 20.8 Protein separation by an aqueous chromatographic system 441 20.9 Ice chromatography 442 20.10 High-temperature liquid chromatography 443 20.11 Ionic liquids 443 20.12 The future in green bioanalysis 444 References 444 21 Infrared Spectroscopy in Biodiagnostics: A Green Analytical Approach 449 Mohammadreza Khanmohammadi and Amir Bagheri Garmarudi 21.1 Infrared spectroscopy capabilities 449 21.2 Infrared spectroscopy of bio-active chemicals in a bio-system 451 21.3 Medical analysis of body fluids by infrared spectroscopy 453 21.3.1 Blood and its extracts 455 21.3.2 Urine 457 21.3.3 Other body fluids 457 21.4 Diagnosis in tissue samples via IR spectroscopic analysis 457 21.4.1 Main spectral characteristics 459 21.4.2 The role of data processing 460 21.4.3 Cancer diagnosis by FTIR spectrometry 465 21.5 New trends in infrared spectroscopy assisted biodiagnostics 468 References 470 22 Environmental Analysis 475 Ricardo Erthal Santelli, Marcos Almeida Bezerra, Julio Carlos Afonso, Maria de Fátima Batista de Carvalho, Eliane Padua Oliveira and Aline Soares Freire 22.1 Pollution and its control 475 22.2 Steps of an environmental analysis 476 22.2.1 Sample collection 476 22.2.2 Sample preparation 476 22.2.3 Analysis 479 22.3 Green environmental analysis for water, wastewater and effluent 480 22.3.1 Major mineral constituents 480 22.3.2 Trace metal ions 481 22.3.3 Organic pollutants 483 22.4 Green environmental analysis applied for solid samples 485 22.4.1 Soil 485 22.4.2 Sediments 488 22.4.3 Wastes 492 22.5 Green environmental analysis applied for atmospheric samples 496 22.5.1 Gases 496 22.5.2 Particulates 497 References 497 23 Green Industrial Analysis 505 Sergio Armenta and Miguel de la Guardia 23.1 Greening industrial practices for safety and cost reasons 505 23.2 The quality control of raw materials and end products 506 23.3 Process control 510 23.4 Effluent control 511 23.5 Working atmosphere control 514 23.6 The future starts now 515 References 515 Index 519

    £124.15

  • Introduction to Bioanalytical Sensors 15

    John Wiley & Sons Inc Introduction to Bioanalytical Sensors 15

    Book SynopsisBiosensors are sensors which utilize a biological compound, such as an enzyme, to provide the rapid, on-the-spot analysis of a sample. Everyone uses two of nature's biosensors on an daily basis: the nose and the tongue. The most well-known application of artificial biosensors is the quick detection of glucose in the blood of diabetic patients.Table of ContentsBiosensors and Bioanalytical Challenges. Designing for Performance. Developing Bioselective Layers. Fundamentals of Electroanalytical Sensors. Optically Based Energy Transduction. Thermal and Acoustic-Wave Transduction. Appendices. Bibliography. Index.

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    £188.96

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    £233.06

  • A Practical Guide to Understanding the NMR of

    John Wiley & Sons Inc A Practical Guide to Understanding the NMR of

    Book SynopsisPeter Mirau presents an introduction to the theory and practice of NMR. He covers the fundamental principles of NMR and the applications to polymers. This book helps readers understand how these methods can be used to determine the chemical structure of polymers that influences the macroscopic properties.Trade Review"...useful for researchers or upper level undergraduate and graduate students exploring NMR for characterizing polymers." (E-STREAMS, April 2006) "...this book presents an introduction to the theory and practice of NMR..." (Apollit, 13th December 2005) "Students and researchers in polymer and analytical chemistry will find this book a useful resource." (Analytical Chemistry, February 1, 2005)Table of Contents1. Introduction to NMR. 1.1 Introduction. 1.2 Basic Principles of NMR. 1.2.1 Introduction. 1.2.2 Magnetic Resonance. 1.2.3 The Rotation Reference Frame. 1.2.4 The Bloch Equations. 1.2.5 Pulsed NMR. 1.2.6 The Fourier Transform. 1.2.7 The Product Operator Formalism. 1.3 Chemical Shifts and Polymer Structure. 1.3.1 Molecular Structure and Chemical Shifts. 1.3.2 Proton Chemical Shifts. 1.3.3 Carbon Chemical Shifts. 1.3.4 Other Nuclei. 1.4 Spin-Spin Coupling. 1.4.1 Introductions. 1.4.2 Nomenclature for Spin-Spin Coupling. 1.4.3 Spin-Spin Coupling Patterns. 1.4.4 Proton-Proton Coupling. 1.4.5 Proton-Carbon Coupling. 1.4.6 Other Nuclei. 1.4.7 Homonuclear Couplings in Insensitive Nuclei. 1.5 NMR Relaxation. 1.5.1 Introduction. 1.5.2 Relaxation Mechanisms. 1.5.3 Spin-Lattice Relaxation. 1.5.4 Spin-Spin Relaxation. 1.5.5 The Nuclear Overhauser Effect. 1.6 Solid State NMR. 1.6.1 Chemical Shift Anisotropy. 1.6.2 Magic-Angle Sample Spinning. 1.6.3 Dipolar Broadening and Decoupling. 1.6.4 Cross Polarization. 1.6.5 Quadrupolar NMR. 1.7 Multidimensional NMR. 1.7.1 Magnetization Transfer in nD NMR. 1.7.2 Solution 2D NMR Experiments. 1.7.3 Solid-State 2D NMR Experiments. 2. Experimental Methods. 2.1 Introduction. 2.2 The NMR Spectrometer. 2.2.1 The Magnet. 2.2.2 Shim Coils. 2.2.3 RF Console. 2.2.4 NMR Probes. 2.2.5 Computer. 2.3 Tuning the NMR Spectrometer. 2.3.1 Adjusting the Homogeneity. 2.3.2 Adjusting the Gain. 2.3.3 Tuning the Probe. 2.3.4 Adjusting the Pulse Widths. 2.4 Solution NMR Methods. 2.4.1 Sample Preparation. 2.4.2 Data Acquisition. 2.4.3 Decoupling. 2.4.4 Data Processing. 2.4.5 Quantitative NMR. 2.4.6 Sensitivity Enhancement. 2.4.7 Spectra Editing. 2.5 Solid-State NMR Methods. 2.5.1 Magic-Angle Sample Spinning. 2.5.2 Gross Polarization. 2.5.3 Decoupling. 2.5.4 Wideline NMR. 2.5.5 Solid-State Proton NMR. 2.6 NMR Relaxation. 2.6.1 NMR Relaxation in Solution. 2.6.2 Solid-State NMR Relaxation. 2.7 Multidimensional NMR. 2.7.1 Data Acquisition. 2.7.2 Data Processing. 3. The Solution Characterization of Polymers. 3.1 Introduction. 3.1.1 Polymer Microstructure. 3.1.2 Spectral Assignments in Polymers. 3.2 Stereochemical Characterization of Polymers. 3.2.1 The Observation of Stereochemical Isomerism. 3.2.2 Resonance Assignments for Stereosequences. 3.3 Regioisomerism in Polymers. 3.4 Defects in Polymers. 3.4.1 Branching. 3.4.2 Endgroups. 3.5 Polymer Chain Architecture. 3.6 Copolymer Characterization. 3.6.1 Random Copolymers. 3.6.2 Alternating Copolymers. 3.6.3 Block Copolymers. 3.7 The Solution Structure of Polymers. 3.7.1 Polymer Chain Conformation. 3.7.2 Intermolecular Interactions in Polymers. 4. The Solid-State NMR of Polymers. 4.1 Introduction. 4.2 Chain Conformation in Polymers. 4.2.1 Semicrystalline Polymers. 4.2.2 Amorphous Polymers. 4.2.3 Elastomers. 4.2.4 Reactivity and Curing in Polymers. 4.3 Structure and Morphology in Polymers. 4.3.1 Introduction. 4.3.2 Spin Diffusion and Polymer Morphology. 4.3.3 Semicrystalline Polymers. 4.3.4 Block Copolymers. 4.3.5 Multiphase Polymers. 4.3.6 Polymer Blends. 5. The Dynamics of Polymers. 5.1 Introduction. 5.2 Chain Motion of Polymers in Solution. 5.2.1 Modeling the Molecular Dynamics of Polymers in Solution. 5.2.2 Relaxation Measurements in Solution. 5.2.3 NMR Relaxation Measurements in Solution. 5.2.4 The Relaxation of Polymers in Solution. 5.3 NMR Relaxation in the Solid State. 5.3.1 Introduction. 5.3.2 NMR Relaxation in Solid Polymers. 5.3.3 Spin Exchange in Solid Polymers. 5.3.4 Polymer Dynamics and Lineshapes.

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    John Wiley & Sons Inc Physics Chemistry and Technology of Solid State

    Book SynopsisFocuses on the principles of solid-state sensor operations, demonstrating the interdisciplinary science that governs modern sensing devices. The text covers fabrication technology, device performance, areas of application and integration/multiplexing trends in sensor development.Table of ContentsInteractions of Gases with Surfaces: The H2 Case. Gas-Sensitive Solid State Semiconductor Sensors. Photonic and Photoacoustic Gas Sensors. Fiber-Optic Sensors. Piezoelectric Quartz Crystal Microbalance Sensors. Surface Acoustic Wave Sensors. Pyroelectric and Thermal Sensors. Future Trends. Appendix. Index.

    £175.46

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    John Wiley & Sons Inc Environmental Oxidants

    Book SynopsisThe chemical enigma that is both a pollutant and anantipollutant--and environmental science's newest causecelebre.oxidants Responsible for chemical reactions both harmfuland benign, oxidants represent the sort of chemical puzzle thathave scientists both concerned and fascinated. Implicated in deadlysmog episodes and arteriosclerosis, oxidants have also played amajor role in treating polluted waters and in certain anticancerdrugs. A broad-based, up-to-date examination of the environmentalchemistry and toxicology of oxidants, Environmental Oxidants is acompendium of the latest research being done in the field. Bringingtogether the work of noted researches, the book contains a detailedlook at: * Evolution, production, distribution, and fate of oxidants in theatmosphere, hydrosphere, and biosphere * Influence of human activities on oxidative processes in theatmosphere * Oxidative stress at the cellular, systemic, and ecosystemlevels * Use of oxidants in wastewater treatment processes A selTable of ContentsPartial table of contents: Photosynthetic Oxygen Evolution (C. Yocum). Oxidants in the Unpolluted Marine Atmosphere (A. Thompson). Ozone Formation in Urban Plumes (I. Colbeck & A.MacKenzie). The Impact of Dynamics and Transport on Stratospheric Ozone andOther Constituents (J. Austin). Aqueous Sulfur(IV) Oxidation Revisited (L. Martin). Oxidative Mechanisms of Phototoxity (R. Larson & K.Marley). Effects of Ozone in Human Studies (N. Alexis, et al.). Some Hematological Effects of Oxidants (O. Baskurt & S.Yavuzer). Impact of Oxidants on a Forest Area Assessed with Dynamic Maps (W.Grossmann). Alternative Attainment Criteria for a Secondary Federal Standardfor Ozone (E. Lee, et al.). Index.

    £223.16

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