Abstract

Abstract A rapid and simple method was developed for gas-liquid chromatographic (GLC) separation of the trimethylsilylated (TMS) derivatives of the fixed acids present in wine. Acids were precipitated as lead salts to eliminate sugar interference. The TMS derivatives were completely separated on a 6' X 14" o.d. glass column of 3.8% SE-30 on Diatoport S (silanized support) and were measured by reacting the dried lead salts with trimethylchlorosilane and hexamethyldisilazanc in the presence of pyridine. This method permits the simultaneous determination in wine of several acids, such as succinic, malic, tartaric, and citric acids in ca 4 hours. Several other derivatives were observed in the chroniatograms but were not identified

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