Gas Chromatography – Mass Spectrometry (GC-MS)

An example of a "hyphenated" technique combining two analytical techniques.  The Gas Chromatograph (GC) is used to separate mixtures of compounds. This is linked to a Mass Spectrometer (MS) which detects the resolved compounds. Neutral molecules exiting the analytical column are ionised typically at 70eV, the ions are then filtered before being detected.

GC-MS techniques