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Fundamentals of GC/MS
Introduction: Types of Ions
Types of Ions
Ionization produces positively- and negatively-charged atoms, mplecules, or fragments called ions. An overview of a mass spectrum will be provided and various types of ions will be introduced.
- Example of Mass Spectrum
- Base Peak
- Fragment Ion
- Isotope Peak
- Introduction: What is Mass ?
- Introduction: Types of Ions
- Ionization Modes: EI
- Ionization Modes: PCI
- Ionization Modes:NCI
- Hardware: Ion Source
- Hardware: Mass Analyzer
- Hardware: Scan Mode and SIM Mode
- Hardware: Detector
- Hardware: Vacuum System
- Parameters Expressing Performance of Mass Analyzer :Mass Resolution and Peak Width
- Parameters Expressing Performance of Mass Analyzer :Signal-to-Noise Ratio
- Qualitative Methods of GC/MS Analysis: Retention Time and Retention Index
- Qualitative Methods of GC/MS Analysis: Library Search