Mass Spectrometry m/z Calculator

Calculate Mass Spectrometry Parameters

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Molecular Mass Calculator

Calculate exact mass and isotope distribution

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Isotope Pattern Calculator

Calculate isotopic distribution patterns

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Fragment Analysis Calculator

Analyze common fragmentation patterns

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Understanding Mass Spectrometry

Basic Concepts

Key principles:

  • Mass-to-charge ratio
  • Molecular ion
  • Fragmentation
  • Isotope patterns

Ionization Methods

Common techniques:

  • Electron ionization
  • Chemical ionization
  • ESI
  • MALDI

Mass Analyzers

Types:

  • Quadrupole
  • Time-of-flight
  • Ion trap
  • FT-ICR

Applications

Uses in chemistry:

  • Structure elucidation
  • Quantitative analysis
  • Proteomics
  • Environmental analysis

Advanced Topics

Special cases:

  • High resolution MS
  • Tandem MS
  • Ion mobility
  • Imaging MS

Essential Mass Spectrometry Formulas

Mass-to-Charge Ratio

m/z = mass/charge

Resolution

R = m/Δm

Mass Defect

Δm = exact mass - nominal mass