Gas chromatography- definition, principle, working, uses
What is gas chromatography? Gas chromatography differs from other forms of chromatography in that the mobile phase is a gas and the components are separated as vapors. It is thus used to separate and detect small molecular weight compounds in the gas phase. The sample is either a gas or a liquid that is vaporized in the injection port. The mobile phase for gas chromatography is a carrier gas, typically helium because of its low molecular weight and being chemically inert. …Read more