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  • HOME 
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  • >  GCMS : Fundamentals of GC/MS
  • >  Ionization Modes: EI

Ionization Modes: EI

GCMS : Fundamentals of GC/MS

EI

EI, one of the important ionization methods for GC/MS, will be explained. Additionally, you can experience the statistical aspect of mass analysis; the more ions you measure, the more improved data you obtain.
  • Three Ionization Modes
  • Features of EI
  • Molecular Ion Produced by EI
  • Fragment Ion Produced by EI
  • Full View of EI
  • Producing EI Mass Spectrum
  • Electron Energy and Mass Spectrum

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

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