Sultan Mussakhan
Researcher,Kazakh National University,Almaty
Title: Hunan University College of Bioloy, Hunan province, China
Biography
Biography: Sultan Mussakhan
Abstract
Vodka is a popular and cheap alcoholic drink making it a target for the adulteration. According to statistics, up to half of vodkas in market can be adulterated (counterfeit) in Eurasia. Alcohol adulteration causes the range of diseases and deaths, which remains significant in most countries. In the list of affected countries, Kazakhstan is top 10 upon to the mortality statistics from counterfeit alcohol. The simplest and popular method to detect counterfeit is based on direct analysis by gas chromatography (GC) with flame ionization detection (FID). The main drawback of this method for discovery of adulterated vodka samples is insufficient sensitivity. The aim of this study was to increase sensitivity of the method for determination of key vodka impurities and monitor the samples of vodka in Eurasian market. Target analytes were acetone, ethyl acetate, methyl acetate, methanol, 2-butanol, 1-propanol, iso-butanol, isoamyl alcohol, and ethanol. Optimized parameters included split ratio 10:1, inlet temperature >120°C, initial oven temperature 60°C, flow rates of make-up gas, air and hydrogen 50, 400 and 40 mL/min, respectively. Obtained calibration plots are linear in the concentration range between 1 and 1000 mg/L with approximation coefficients R2>0.99. Compared to a standard method, slope factors are about 4 times higher when optimized method is used proving its higher sensitivity. There were approximately 30 popular vodka samples monitored in 2015 and 2019 from Kazakhstan, Ukraine, Belarus, Turkey and Russia. The results conclude that the quality of vodka is increasing over the past five years.