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Fundamentals of GC/MS
Hardware: Vacuum System
Vacuum System
The mass spectrometer is housed in a vacuum. The basic knowledge of vacuum system, which is needed to understand GC/MS analysis, will be provided here.
- Overview of Vacuum System
- Why Does MS Require High Vacuum?
- Turbomolecular Pump
- Single Pumping System
- Limitation Factors of Vacuum
- Differential Pumping System
- Single Pumping System and Differential Pumping System
- Dual Inlet Turbomolecular Pump
- TMP Pumping System and Column
- 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