A ty pe of automated chromatography (a technique
used to separate mixtures of substances) in which the mixture to be analyzed is
vaporized and carried by an inert gas through a special column and thence to a detection
device. The special column can contain an inert porous solid (in gas-solid chromatography)
or a liquid coated on a solid support (in gas-liquid chromatography). The basic
aim with GC is to separate each component that was in the mixture so that it produces
a different peak in the detection device output which is graphed on a chart recorder.
GC is a valuable tool in biochemistry (and other fields of chemistry, as in the
analysis of perfumes).
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