1
|
Charapitsa S, Sytova S, Kavalenka A, Sabalenka L, Zayats M, Egorov V, Leschev S, Melsitova I, Vetokhin S, Zayats N. Intelligent use of ethanol for the direct quantitative determination of methanol in alcoholic beverages. J Food Compost Anal 2022. [DOI: 10.1016/j.jfca.2022.104772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
2
|
Charapitsa S, Sytova S, Kavalenka A, Sobolenko L, Shauchenka Y, Kostyuk N, Zayats M, Egorov V, Leschev S, Melsitova I, Vetokhin S, Zayats N. Development of a quality control material for the analysis of volatile compounds in alcoholic beverages. J Chem Metrol 2021. [DOI: 10.25135/jcm.66.2111.2259] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
3
|
Charapitsa S, Sytova S, Kavalenka A, Sobolenko L, Kostyuk N, Egorov V, Leschev S, Vetokhin S, Zayats N. The study of the matrix effect on the method of direct determination of volatile compounds in a wide range of alcoholic beverages. Food Control 2021. [DOI: 10.1016/j.foodcont.2020.107528] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
4
|
Korban A, Charapitsa S, Čabala R, Lidia S, Sytova S. The perspectives of ethanol usage as an internal standard for the quantification of volatile compounds in alcoholic products by GC-MS. J Mass Spectrom 2020; 55:e4493. [PMID: 31881104 DOI: 10.1002/jms.4493] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 12/16/2019] [Accepted: 12/20/2019] [Indexed: 06/10/2023]
Abstract
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.
Collapse
Affiliation(s)
- Anton Korban
- 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
| | - Siarhei Charapitsa
- Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus
| | - Radomír Čabala
- Faculty of Science, Department of Analytical Chemistry, Charles University, Hlavova 2030/8, 128 40, Prague 2, Czech Republic
| | - Sobolenko Lidia
- 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
| | - Svetlana Sytova
- Institute for Nuclear Problems of Belarusian State University, 220006, Bobruyskaya Str, 11, Minsk, Belarus
| |
Collapse
|
5
|
Charapitsa S, Sytova S, Korban A, Sobolenko L, Egorov V, Leschev S, Zakharov M, Čabala R, Busarova R, Shestakovich I, Tolstouhova A, Ondroušek S, Vávra J, Yilmaztekin M, Cabaroglu T. Interlaboratory study of ethanol usage as an internal standard in direct determination of volatile compounds in alcoholic products. BIO Web Conf 2019. [DOI: 10.1051/bioconf/20191502030] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
A collaborative interlaboratory study on the method of direct quantitation of volatile compounds in spirit drinks and alcoholic products was conducted. The discussed method applies ethanol, the major volatile component of an alcoholic product, as an internal standard. In this study 9 laboratories from 4 different countries were supplied with standard solutions for gas chromatographic measurements. Five aqueous ethanol 40% (v/v) standard solutions containing target compounds in concentrations ranging from 10 mg/L to 400 mg/L of absolute alcohol were prepared and sent to the participants for quantification of acetaldehyde, methyl acetate, ethyl acetate, methanol, 2-propanol, 1-propanol, 2-methyl-1-propanol, 1-butanol and 3-methyl-1-butanol. The interlaboratory study was evaluated according to the ISO 5725 standards and the Eurachem guide. The within-laboratory precision varied between 0.4% and 7.5% for all samples and compounds, showing a sufficiently high repeatability of the method. The between-laboratory precision was found to vary within a satisfactory range of 0.5% ÷ 10.0%. Precision of the method was well within the range predicted by the Horwitz equation for all analytes. The analysis of trueness showed that the bias of the method is insignificant at the significance level α = 5%. The determined concentrations of the analytes compared well to the gravimetrical values thus showing very satisfactory accuracy of the method. The results of the interlaboratory study confirmed that “Ethanol as Internal Standard” method is robust and reliable and can be used as a standard reference method for analysing volatile compounds in water-ethanol samples. The possibilities of method validation according to the previously obtained experimental data were shown.
Collapse
|
6
|
Charapitsa S, Sytova S, Korban A, Boyarin N, Shestakovich I, Čabala R. The establishment of metrological characteristics of the method “Ethanol as Internal Standard” for the direct determination of volatile compounds in alcoholic products. J Chem Metrol 2018. [DOI: 10.25135/jcm.14.18.02.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|