Mass Spectroscopy Quantitative Chemical Analysis Harris, 6th Edition
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Presentation on theme: "Mass Spectroscopy Quantitative Chemical Analysis Harris, 6th Edition"— Presentation transcript:
1 Mass Spectroscopy Quantitative Chemical Analysis Harris, 6th Edition Chapter 22Mass SpectroscopyQuantitative Chemical AnalysisHarris, 6th Edition
2 What is Mass SpecGeneration and Separation of Charged Molecules based on a mass to charge ratio.Applications from Geochemistry to Biotechnology
3 Mass DefinitionsAtomic Mass – Mass from periodic table based isotope abundanceMolecular Mass – Mass for the sums of the atomic masses (Water = 2* = Da)Nominal Mass - Sum of integer masses of most abundant isotopes. (Water = 18 Da)
4 Typical Mass Spectrometer Ion source - electron beamIon separation - magnetIon detection - Electron multiplierA high vacuum method (avoid collisions that will effect ions)
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