Principles of Field Ionization and Field Desorption Mass Spectrometry (eBook)

International Series in Analytical Chemistry

H. D. Beckey (Autor)

R. Belcher, H. Frieser (Herausgeber)

eBook Download: PDF

2016 | 1. Auflage
354 Seiten
Elsevier Science (Verlag)
9781483156910 (ISBN)

Infos

Principles of Field Ionization and Field Desorption Mass Spectrometry delves deeper into field ionization and field desorption. The book covers the five main subareas of field ionization and field desorption mass spectrometry that has grown in importance. Coverage includes the theory of field ionization and field desorption; field ionization and field desorption techniques and sources; high field surface chemistry; kinetics and mechanisms of decompostion of field ions in the gas phase; and qualitative and mixture analysis with field ionization and field desorption mass spectrometry. The text is recommended for students, experts, and researchers in chemistry, especially those who wish to learn more or have an in-depth study about field ionization and field desorption, its principles, and its applications in chemistry.

Inhalt

Front Cover 1
Principles of Field Ionization and Field Desorption Mass Spectrometry 4
Copyright Page 5
Table of Contents 6
Preface 12
Introduction 14
CHAPTER 1. THEORY OF FIELD IONIZATION (FI) AND FIELD DESORPTION (FD) 18
1.1. FI probability 18
1.2. Particle supply 24
1.3. Minimum distance for Fl 27
1.4. Field-induced resonance states at a surface 27
1.5. Theory of field desorption (FD) and field evaporation 33
1.6. Field electron emission 41
CHAPTER 2. FI AND FD TECHNIQUES AND SOURCES 43
2.1. General design of FI sources 43
2.2. Tips as FI emitters 58
2.3. Sharp metal edges as FI emitters 78
2.4. Thin wires as FI/FD emitters 80
2.5. Comparison of tips, sharp metal edges and thin wires 97
2.6. Design of some FI/FD sources 102
2.7. Pulsed FI sources 105
2.8. FI microscopes as sources for mass spectrometers 107
2.9. Resolving power of FI/FD mass spectrometers 114
2.10. Sample loading techniques for FD wires 115
2.11. Sensitivity of FI/FD mass spectrometers 118
2.12. Preparation and recording of an FD mass spectrum 119
2.13. Automatic emitter emission control, and emitter current program for FD 120
CHAPTER 3. HIGH FIELD SURFACE CHEMISTRY 125
3.1. Charge distribution of organic ions in high electric fields 125
3.2. Field dissociation of molecular ions 138
3.3. Bond energies of molecular ions 154
3.4. Field condensation and multilayer adsorption 158
3.5. Ion clusters 165
3.6. Appearance potentials for ion formation in high fields 167
3.7. Mechanisms of reactions in adsorbed layers at high fields 177
3.8. Multiply charged ions 186
3.9. Promotion of FI 187
3.10. Supplementary notes 189
CHAPTER 4. KINETICS AND MECHANISMS OF DECOMPOSITION OF FIELD IONS IN THE GAS PHASE 191
4.1 Introduction 191
4.2. Calculation of the decomposition times 191
4.3. Possible elementary mechanisms for ion decomposition in high electric fields 209
4.4. Statistical decomposition in weak fields and in the field free spaces of the mass spectrometer 212
4.5. Evaluation of the reaction rates 214
4.6. Normalized rates of some decomposition processes in the time range of about 3 x 10-11Sec 221
4.7. Mechanisms Of Some Selected Unimolecular Reactions Of Organic Ions 221
4.8. Temperature dependence of FI mass spectra 240
4.9. Determination of the energy distribution P(E) of field-ionized molecules 247
4.10. Combination of field ionization kinetics with other mass spectrometric methods 248
CHAPTER 5. QUALITATIVE AND MIXTURE ANALYSIS WITH FI AND FD MASS SPECTROMETRY (MS 251
5.1. Introduction 251
5.2. Qualitative analysis with an FI mass spectrometer 252
5.3. Analysis of mixtures using FI MS 260
5.4. Qualitative analysis with the FD mass spectrometer 275
5.5. Quantitative analysis of mixtures with FD MS 320
References 324
Index 344
Other Titles in the Series 354

Produkt-Details

• Erscheint lt. Verlag: 29.7.2016
• Sprache: englisch
• Themenwelt: Naturwissenschaften ► Chemie ► Analytische Chemie
• Themenwelt: Naturwissenschaften ► Physik / Astronomie
• Themenwelt: Technik
• ISBN-13: 9781483156910 / 9781483156910