ABSTRACT
Gas chromatography is a method suitable for the separation, identification, and quantitative determination of the components of gas mixtures or substances which can be volatilized without decomposition. Commercially available devices can be applied to the solution of diverse problems. The detectors used are mostly based on ionization and on heat conductivity. The electrical signal provided by the detector and recorded as a function of time is called the chromatogram, which is a recording of the result of separation. For a given detector the practical sensitivity is dependent on the nature of the substance and on the experimental conditions. A special method of the internal standardization is the area normalization.
