Gas‐liquid partition chromatography

Abstract

Abstract The identification and determination of different aliphatic substances by means of a suitable system of gas chromatography is described. Gas‐chromatographic separations of different series of carboxylic acid esters from propionic‐ up to stearic acid ester, alcohols from pentanol up to hexadecanol, and aldehydes from pentanal up to decanal are described. Silicone grease or paraffin wax is used as the liquid phase with celite as a carrier. The separations have been carried out at temperatures up to 230° C, which made the use of atmospheric pressure at the outlet possible. Hence the fractions separated can be conveniently collected. A quantitative determination of milligram amounts in mixtures of methyl esters is described. The minimal detectable amounts as estimated for methyl propionate are of the order of micrograms.