In gas chromatography (GC) we inject the sample, which may be a gas or a liquid, into a gaseous mobile phase (often called the carrier gas). The mobile phase carries the sample through a packed or cap...In gas chromatography (GC) we inject the sample, which may be a gas or a liquid, into a gaseous mobile phase (often called the carrier gas). The mobile phase carries the sample through a packed or capillary column that separates the sample's components based on their ability to partition between the mobile phase and the stationary phase. By adjusting conditions it usually is possible to design a separation so that analytes elute by themselves, even when the mixture is complex.
