Development and characterization of capillary Atmospheric Pressure Electron Capture Ionization (cAPECI) / von Valerie Ann Christin Derpmann. 2014
Inhalt
- 1 Introduction
- 1.1 Ion Chemistry in Atmospheric Pressure Mass Spectrometry
- 1.1.1 Common Atmospheric Pressure Ion Sources
- 1.1.2 Collision Induced Dissociation
- 1.1.3 Ion-Molecule/Radical Reactions
- 1.1.4 Cluster Formation
- 1.2 Inlet Capillaries
- 1.3 Negative Ion Mass Spectrometry
- 1.4 Photoelectric Effect
- 1.5 Ionization Methods based on the Photoelectric Effect
- 1.6 Proton Transfer Reaction Mass Spectrometry
- 1.7 Analytes accessible with Negative Ionization
- 2 Aim of this Work
- 3 Experimental
- 3.1 Chemicals
- 3.2 Computational Investigations
- 3.3 Ion Trap Mass Spectrometer
- 3.4 Ion Transmission Measurements
- 3.5 The Photoelectric Effect at Atmospheric Pressure
- 3.6 Reaction Mechanism in Negative Mode API-MS
- 3.7 Ion Source Development
- 3.7.1 Sample Introduction
- 3.7.2 UV Lamp
- 3.7.3 Laminar Flow Ion Source
- 3.7.4 Silica Capillary
- 3.7.5 cAPECI Design 1
- 3.7.6 cAPECI Design 2
- 3.8 GC-cAPECI-MS Hyphenation
- 3.9 Atmospheric Chemistry Studies
- 3.10 Determination of Reaction Rate Constants
- 3.11 Desorption APECI
- 4 Ionization Mechanism in Negative Mode API-MS
- 4.1 Verification of Thermal Sampling
- 4.2 Reagent Ions
- 4.3 Formation of Molecular Anions
- 4.4 Formation of Deprotontated Anions
- 4.5 Dinitrotoluenes
- 4.6 Summary and Outlook
- 5 Ion Transmission Measurements
- 5.1 Ion Transmission of Different Materials
- 5.2 Dependence on Relative Humidity
- 5.3 Application of Voltages
- 5.4 Summary and Outlook
- 6 Ion Source Development
- 6.1 The Photoelectric Effect at Atmospheric Pressure
- 6.2 Light Source
- 6.3 Laminar Flow Ion Source
- 6.4 Silica Capillary
- 6.5 cAPECI Design 1
- 6.6 cAPECI Design 2
- 6.7 Summary and Outlook
- 7 Applications
- 7.1 GC-cAPECI-MS Hyphenation
- 7.2 Atmospheric Chemistry
- 7.3 Determination of Rate Constants
- 7.4 Desorption APECI
- 7.5 Summary and Outlook
- 8 Summary and Outlook
- Abbreviations
- List of Tables
- List of Figures
- References