The perspectives of ethanol usage as an internal standard for the quantification of volatile compounds in alcoholic products by GC-MS.
Autor: | Korban A; Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus.; Chemistry Faculty, Department of Analytical Chemistry, Belarusian State University, Leningradskaya Str, 14, 220050, Minsk, Belarus., Charapitsa S; Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus., Čabala R; Faculty of Science, Department of Analytical Chemistry, Charles University, Hlavova 2030/8, 128 40, Prague 2, Czech Republic., Lidia S; Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus.; Chemistry Faculty, Department of Analytical Chemistry, Belarusian State University, Leningradskaya Str, 14, 220050, Minsk, Belarus., Sytova S; Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus. |
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Jazyk: | angličtina |
Zdroj: | Journal of mass spectrometry : JMS [J Mass Spectrom] 2020 Mar; Vol. 55 (3), pp. e4493. Date of Electronic Publication: 2020 Feb 06. |
DOI: | 10.1002/jms.4493 |
Abstrakt: | The potential use of ethanol as an internal standard (IS) for GC-MS analysis was studied. The paper describes the analysis of spirit drinks and other alcoholic products which consist of a mixture of water, ethanol, and volatile compounds. In the suggested method, ethanol was employed as an IS for the common procedure of volatile compounds quantification. A number of standard solutions of nine compounds with different concentrations was prepared in a water-ethanol matrix and measured with GC-MS in the SIM mode. Two possible approaches were suggested to avoid detector saturation during ethanol detection. The first one consisted in using less abundant m/z 47 as quantifiers. These ions mainly correspond to unfragmented heavy ethanol molecules containing one 13 C isotope. The second method consisted in reduction of the voltage of MS electron multiplier. The experiment also included the preparation and subsequent dilution of the standard solution and ethanol with water, which determined the linearity of the modified MS response relative to the ethanol content. Analysis of the obtained results revealed that volatile compounds can be successfully accurately determined with GC-MS by employing ethanol as an IS. Application of the suggested method is not limited to the reported volatile compounds and alcoholic products. (© 2019 John Wiley & Sons, Ltd.) |
Databáze: | MEDLINE |
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