Kvasny Prumysl, 1975 (vol. 21), issue 11

Application of gas chromatography for routine determination of ethanol in fermenting sulphite waste liquor.Peer-reviewed article

M. ŠESTÁKOVÁ

Kvasny Prum. 1975; 21(11): 252-255 | DOI: 10.18832/kp1975032  

A new time-saving method has been elaborated for sulphite waste liquor. It is based on adsorption gas chromatography on Porapak Q and requires injection [by means of a Hamilton syringe] of 4µl of distillate obtained from a sample of fermenting substance, into a CHROM 2 chromatograph fitted with a flame-ionization detector. In the first part of the article the authoress describes the design of a simple distilling apparatus which is used to prepare distillate from 10 ml samples. Following paragraphs deal with the technique of chromatographic determination, with the accuracy of the method and its reproducibility. The analysis takes 30 minutes. The...