Recently developed and validated simple and reliable quantitative method employing ethanol as an internal standard (IS) for GC-MS quantification of volatile compounds in alcoholic products was applied to 36 samples including commercially available world-famous brand spirits from 18 countries and homemade distillates. The GC-MS analyses were performed simultaneously by the suggested approach and official IS method that is prescribed in the legislation of EU and USA. The independent samples t-test was employed to evaluate the statistical difference between the results of these two methods. The test revealed no difference in the results and their repeatability. The main benefits of the suggested method are the elimination of the necessity of manual IS addition and samples density measurement thus making it more economical and productive.

Chemistry Faculty Department of Analytical Chemistry Belarusian State University Leningradskaya 14 220050 Minsk Belarus

Faculty of Science Department of Analytical Chemistry Charles University Hlavova 2030 8 128 40 Prague 2 Czech Republic

Faculty of Science Department of Analytical Chemistry Charles University Hlavova 2030 8 128 40 Prague 2 Czech Republic; Institute for Nuclear Problems of Belarusian State University 220006 Bobruyskaya Str 11 Minsk Belarus; Chemistry Faculty Department of Analytical Chemistry Belarusian State University Leningradskaya 14 220050 Minsk Belarus

Institute for Nuclear Problems of Belarusian State University 220006 Bobruyskaya Str 11 Minsk Belarus

Institute for Nuclear Problems of Belarusian State University 220006 Bobruyskaya Str 11 Minsk Belarus; Chemistry Faculty Department of Analytical Chemistry Belarusian State University Leningradskaya 14 220050 Minsk Belarus

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