Abstract
Compound chromatography is a method for analysing mixtures of organic and inorganic substances, in which the separation is carried out on a liquid chromatographic (LC) column, while the separation is performed with the aid of a gas chromatographic (GC) column. The sample is fed from the LC column to the gas chromatograph automatically at a pre-set frequency and the eluent is separated from the component of interest on the GC column with subsequent detection using a thermalconductivity or flame-ionization detector. The advantages and limitations of the proposed method are discussed. The advantages include its versatility and the possibility of applying advances in gas chromatography, particularly in detection, to liquid chromatography; on the other hand, the method is limited to the analysis of volatile compounds. Compound chromatography has been used in the determination of fatty acids in vegetable oils, fats and products of their processing.
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