Infraredaand raman spectroscopy in forensic science

This book will provide a survey of the major areas in which information derived from vibrational spectroscopy investigations and studies have contributed to the benefit of forensic science, either in a complementary or a unique way. This is highlighted by examples taken from real case studies and analyses of forensic relevance, which provide a focus for current and future applications and developments. INDICE: About the Editors xix List of Contributors xxi Preface xxv SECTIONI: INTRODUCTION 1 1 Introduction and scope 3 1.1 Historical prologue 3 1.2 The application of infrared spectroscopy and Raman spectroscopy in forensic science 5 References 6 2 Vibrational spectroscopy techniques: basics and instrumentation 7 2.1 Introduction 7 2.2 Vibrational spectroscopy techniques 7 2.2.1 The basics and some comparisons 7 2.2.1.1 Wavelength/wavenumber ranges and selection rules 8 2.2.1.2 Sampling considerations 9 2.2.1.3 Sensitivity, surfaces and signal enhancement techniques 10 2.2.1.4 IR and Raman bands 11 2.2.2 Quantitative and classification analyses 13 2.2.2.1 Multivariate data analyses 15 2.2.2.2 Data pre-processing 16 2.2.3 Reference databases and search libraries/algorithms 17 2.3 Vibrational spectroscopy: instrumentation 18 2.3.1 Spectrometers 19 2.3.1.1 Sources 19 2.3.1.2 Detectors 20 2.3.1.3 Spectrometers and interferometers 20 2.3.2 Vibrational spectroscopymicroscopy systems 24 2.3.2.1 Mapping and imaging 26 2.3.3 Fibre optics and fibre-optic probes 30 2.3.4 Remote, portable, handheld, field-use, and stand-off vibrational spectroscopy instrumentation 31 2.4 Closing remarks 35 References 35 3 Vibrational spectroscopy sampling techniques 39 3.1 Introduction 39 3.2 Vibrational spectroscopy: sampling techniques 40 3.2.1 Raman spectroscopy 41 3.2.1.1 Raman spectroscopy: samplingtechniques and considerations 41 3.2.1.2 Resonance Raman spectroscopy 44 3.2.1.3 Surface enhanced Raman spectroscopy and surface enhanced resonance Raman spectroscopy 45 3.2.1.4 Spatially offset Raman spectroscopy 45 3.2.1.5 Transmission Raman spectroscopy 48 3.2.1.6 Raman microscopy/microspectroscopy and imaging 48 3.2.1.7 Remote and fibre-optic probe Raman spectroscopy 49 3.2.2 Mid-infrared spectroscopy 50 3.2.2.1 Mid-infrared transmission spectroscopy: sampling techniques 50 3.2.2.2 Mid-infrared reflection spectroscopy sampling techniques 54 3.2.2.3 Mid-infrared photoacoustic spectroscopy 61 3.2.2.4 Mid-infrared microscopy/microspectroscopy and imaging 62 3.2.3 Near-infrared spectroscopy: sampling techniques 67 3.2.3.1 Near-infrared transmission spectroscopy 68 3.2.3.2 Near-infrared diffuse reflection spectroscopy 68 3.2.3.3 Near-infrared transflection spectroscopy 69 3.2.3.4 Near-infrared spectroscopy: interactance and fibre-optic probe measurements 69 3.2.3.5 Near-infrared microscopy and imaging 69 3.2.4 Terahertz/far-infrared spectroscopy: sampling techniques 70 3.3 Closing remarks 71 Acknowledgements 72 References 72 SECTION II: CRIMINAL SCENE 77 4 Criminal forensic analysis 79 4.1 Introduction 79 4.2 Forensic analysis 79 4.3 General use of IR and Raman spectroscopy in forensic analysis 80 4.3.1 Progression of infrared spectroscopy development in forensic analysis 80 4.3.2 Progression of Raman spectroscopy development in forensic analysis 81 4.3.3 Sampling methods 81 4.3.3.1 Microscopes 81 4.3.3.2 Reflection methods 81 4.3.3.3Gas chromatography/IR 82 4.3.3.4 Spectral im

• ISBN: 978-0-470-74906-7
• Editorial: John Wiley & Sons
• Encuadernacion: Cartoné
• Páginas: 632
• Fecha Publicación: 27/01/2012
• Nº Volúmenes: 1
• Idioma: Inglés