Principles and definition of the method

A chromatbgraphic system always consists of at least two phases. 

This serves as a transport medium for the components contained in the 

The chromatographic methods are primarily subdivided according to the type of mobile phase used, which in addition to its role as a transport medium 

If the stationary phase is a solid, the method is known as gas-solid chromatography (GSC). In this case the separating medium and the stationary phase are identical typical absorbing materials are used, such as silica gel, aluminium oxide, molecular sieve or activated charcoal, to name but a 

Gas-liquid chromatography (GLC) makes use of a liquid stationary phase. The separating medium is made up of two components, a highly porous solid material, the support, whose chemical and sorption properties should be as 

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