Адрес для переписки: Поляков Николай Александрович; E-mail: polakov@yandex.ru

SIMULTANEOUS QUANTITATIVE DETERMINATION OF GLYCEROL AND POTASSIUM ACETATE IN HIGH-CONCENTRATED AQUEOUS SOLUTION BY THERMOGRAVIMETRY METHOD

N.A. Polakov, Yu.V. Abramov, G.I. Blinova

All-Russia Research Institute of Medicinal and Aromatic Plants, Russia, Grina str., 7, Moscow, 117216, Russia

DOI: 10.19112/2413-6174-2018-19-1-51-55 

ABSTRACT. We investigated the possibility of application of thermogravimetry method to analyze the components of highly concentrated solutions used in the preservation of biological substances. Methodical approaches to quantify the content of potassium acetate, glycerin and water in experimental preservative solutions thermogravimetric method. The received data the relative error of measurement of the quantity of each component in solution of thermogravimetry method is no more than 3.0 %. The result of the comparison showed that the thermogravimetry method is much less labour-intensive, requires less time expenses and small amount of sample. In addition, this method allows to analyze multiple components at the same time. It was shown, that the method of gravimetry may be used for express analysis of the content of potassium acetate, glycerin and water conservation of highly concentrated aqueous solutions.

KEYWORDS: thermogravimetric analysis, preservative solution, potassium acetate, glycerin, water, highly concentrated solution, quantification.