Introduction: Analysis by Mass Spectrometry, Ionisation of Molecules, Fragmentation, Interpretation of Mass Spectra; The Mass Spectrometer; Ionisation and Ion Sources; Mass Analysers; Metastable Ions; Ion Detection and Recording; Detection and Use of Isotopes in Mass Spectrometry; Modes of Fragmentation; Fragmentation of Common Functional Groups: Alcohols, Ethers, Phenols, Carbonyl Compounds, Amines, Hydrocarbons, Halocompounds, Nitrocompounds, Heterocycles and Sulphur Compounds; Chromatography-Mass Spectrometry: Gas Chromatography-Mass Spectrometry, Liquid Chromatography-Mass Spectrometry.