Medical Definition of gas chromatography
: chromatography in which the sample mixture is vaporized and injected into a stream of carrier gas (as nitrogen or helium) moving through a column containing a stationary phase composed of a liquid or a particulate solid and is separated into its component compounds according to the affinity of the compounds for the stationary phase—abbreviation GC; compare column chromatography, gas-liquid chromatography, thin-layer chromatography
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