Gas Chromatography Mass Spectrometry (GC-MS):

GC-MS has for many years been considered the ‘gold standard’ in analysis thanks to its ability to separate a huge range of compounds plus provide confirmation of compound identity by comparison against commercially available mass spectral libraries. These libraries contain upwards of 500,000 compounds so most commonly encountered pesticides, metabolites and production by-products are bound to be covered.

Operating a high temperatures and in the gas phase, this technique is best suited for thermally stable compounds.