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Title: Fundamentals Of Gas Chromatography
Author: Ray A. Parker
Source: 1985 Appalachian Gas Measurement Short Course
Year Published: 1985
Abstract: Chromatography is a physical method of separating the various components of a mixture into pure fractions or bands of each component. Gas chromatography performs this separation on a gaseous or vapor mixture. The separation is effected by distributing the mixture between two phases referred to as the stationary phase and the mobile phase. This separation technique may be used for many organic and inorganic mixtures. The basic requirement of the sample mixture is that it can be in the vapor phase at the time of separation and detection. The separation is performed by passing the mobile phase over or through the stationary phase. The mobile phase consists of the sample mixture and a carrier gas such as nitrogen, helium, or hydrogen. The stationary phase consists of a fixed bed of liquid, solid, or liquid coated solid with a large surface area. Components of the mobile phase are retained temporarily through adsorption (surface) and absorption (in depth) on and in the stationary phase.

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