Introduction to GC-MS Spectrometry

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Opis: Introduction to GC-MS Spectrometry - Stephane Bouchonnet

Although GC-MS (gas chromatography-mass spectrometry) finds applications in fields as diverse as the food processing industry, medicine, pharmacology, and environmental analysis, the few works that are dedicated to this use of mass spectrometry are generally highly complex and theoretical. Emphasizing the practical aspects of GC-MS, without neglecting the fundamental theory, Introduction to GC-MS Coupling addresses both novice and experienced users of this technique. It presents GC-MS in a clear, instructive way and proposes solutions for the difficulties classically encountered by users. The book begins with the core principles of gas chromatography and its specific uses with MS detectors. It discusses generalities of mass spectrometry, including the various types of MS detectors and insight into the vacuum necessary for efficient operation. Chapters cover the types of analyzers used in GC-MS and their functioning principles, with a focus on the commonly used quadrupolar analyzers, as well as the implementation, advantages, and limits of various modes of acquisition in GC-MS. The text also compares performance and limitations of quadrupolar analyzers. The author includes a full chapter on quantification using GC-MS, a topic that can be puzzling for many chemists. Encouraging a critical approach to databases, he compares laboratory-made and commercial mass spectra databases, and describes a database research algorithm. The final chapter examines mass spectra interpretation, covering chemistry concepts such as inductive and mesomeric effects required to understand dissociation pathways, and presents a global strategy for mass spectra interpretation.Concepts of Gas Chromatography General Points Instrumentation Fast Chromatography Multidimensional Chromatography References Introduction to Mass Spectrometry: General Points Mass Spectrometer Components Vacuum Detectors References Ion Production in GC-MS: Sources Definitions and General Points Electron Ionization Chemical Ionization References Ion Separation: Analyzers General Points Technical Features Quadrupoles Ion Traps Time-of-Flight Analyzers Magnetic Analyzers References Acquisition Modes in GC-MS Definitions Full Scan Analysis SIR, SIM, and SIS Modes Tandem Mass Spectrometry (MS/MS) References Comparison of Quadrupolar Analyzer Performances: Criteria for Choosing an Analyzer Comparison Criteria Spectral Repeatability and Autoprotonation Response Functions and Limits of Detection Chromatographic Profiles Maintenance and Robustness Choosing a Quadrupolar Analyzer References Quantification by GC-MS Introduction External Standard Quantification Internal Standard Quantification Method Validation References Spectra Databases for GC-MS Limitations of Mass Spectra Interpretation Spectra Databases Research Algorithm Results Display Research Parameters Databases and Mass Spectra Interpretation Other Uses of Databases References Introduction to Mass Spectra Interpretation Introduction Chemistry Principles Fundamental to Mass Spectra Interpretation Dissociation Mechanisms and Interpretation of Mass Spectra in Electron Ionization Dissociation Mechanisms in Positive Chemical Ionization Dissociation Mechanisms in Negative Chemical Ionization Mass Spectra Interpretation Strategy References Index


Szczegóły: Introduction to GC-MS Spectrometry - Stephane Bouchonnet

Tytuł: Introduction to GC-MS Spectrometry
Autor: Stephane Bouchonnet
Producent: CRC Press Inc.
ISBN: 9781466572515
Rok produkcji: 2013
Ilość stron: 228
Oprawa: Miękka


Recenzje: Introduction to GC-MS Spectrometry - Stephane Bouchonnet

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Introduction to GC-MS Spectrometry

Although GC-MS (gas chromatography-mass spectrometry) finds applications in fields as diverse as the food processing industry, medicine, pharmacology, and environmental analysis, the few works that are dedicated to this use of mass spectrometry are generally highly complex and theoretical. Emphasizing the practical aspects of GC-MS, without neglecting the fundamental theory, Introduction to GC-MS Coupling addresses both novice and experienced users of this technique. It presents GC-MS in a clear, instructive way and proposes solutions for the difficulties classically encountered by users. The book begins with the core principles of gas chromatography and its specific uses with MS detectors. It discusses generalities of mass spectrometry, including the various types of MS detectors and insight into the vacuum necessary for efficient operation. Chapters cover the types of analyzers used in GC-MS and their functioning principles, with a focus on the commonly used quadrupolar analyzers, as well as the implementation, advantages, and limits of various modes of acquisition in GC-MS. The text also compares performance and limitations of quadrupolar analyzers. The author includes a full chapter on quantification using GC-MS, a topic that can be puzzling for many chemists. Encouraging a critical approach to databases, he compares laboratory-made and commercial mass spectra databases, and describes a database research algorithm. The final chapter examines mass spectra interpretation, covering chemistry concepts such as inductive and mesomeric effects required to understand dissociation pathways, and presents a global strategy for mass spectra interpretation.Concepts of Gas Chromatography General Points Instrumentation Fast Chromatography Multidimensional Chromatography References Introduction to Mass Spectrometry: General Points Mass Spectrometer Components Vacuum Detectors References Ion Production in GC-MS: Sources Definitions and General Points Electron Ionization Chemical Ionization References Ion Separation: Analyzers General Points Technical Features Quadrupoles Ion Traps Time-of-Flight Analyzers Magnetic Analyzers References Acquisition Modes in GC-MS Definitions Full Scan Analysis SIR, SIM, and SIS Modes Tandem Mass Spectrometry (MS/MS) References Comparison of Quadrupolar Analyzer Performances: Criteria for Choosing an Analyzer Comparison Criteria Spectral Repeatability and Autoprotonation Response Functions and Limits of Detection Chromatographic Profiles Maintenance and Robustness Choosing a Quadrupolar Analyzer References Quantification by GC-MS Introduction External Standard Quantification Internal Standard Quantification Method Validation References Spectra Databases for GC-MS Limitations of Mass Spectra Interpretation Spectra Databases Research Algorithm Results Display Research Parameters Databases and Mass Spectra Interpretation Other Uses of Databases References Introduction to Mass Spectra Interpretation Introduction Chemistry Principles Fundamental to Mass Spectra Interpretation Dissociation Mechanisms and Interpretation of Mass Spectra in Electron Ionization Dissociation Mechanisms in Positive Chemical Ionization Dissociation Mechanisms in Negative Chemical Ionization Mass Spectra Interpretation Strategy References Index

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Cena 252,00 PLN
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Szczegóły: Introduction to GC-MS Spectrometry - Stephane Bouchonnet

Tytuł: Introduction to GC-MS Spectrometry
Autor: Stephane Bouchonnet
Producent: CRC Press Inc.
ISBN: 9781466572515
Rok produkcji: 2013
Ilość stron: 228
Oprawa: Miękka


Recenzje: Introduction to GC-MS Spectrometry - Stephane Bouchonnet

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