DOI 10.17586/0021-3454-2023-66-6-501-508
UDC 543.42
APPLICATION OF THE SPECTROPHOTOMETRIC METHOD FOR STUDYING ETHYL ALCOHOL IN LIQUID PHASE MEDIA
Saint-Petersburg state university of aerospace instrumentation; Associate professor
O. V. Afanaseva
St. Petersburg Mining University, Department of System Analysis and control; St. Petersburg State University of Aerospace Instrumentation, Department of Applied Mathematics;
V. V. Kurlov
St. Petersburg State University of Aerospace Instrumentation, Department of Innovation and Integrated Quality Systems;
I. S. Tayurskaya
St. Petersburg University of Management Technologies and Economics, Department of Information Technologies and Mathematics;
M. V. Sokolovskaya
St. Petersburg State University of Aerospace Instrumentation, Department of Applied Mathematics; Senior Lecturer
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Abstract. Application of the spectrophotometric method for studying ethyl alcohol in some types of beer products is considered. The optical spectroscopy methods make it possible to conduct a quantitative and qualitative analysis of the composition of a substance. These methods are highly accurate, informative, reliable, as well as economical and widely used due to the availability of instrumentation, ease of obtaining and interpreting information, so the work is relevant and promising. The spectrophotometer appearance is presented, optical scheme and the technical characteristics of the device are given. The spectral dependences of the absorption coefficient of the proportion of ethyl alcohol in different sorts of beer are obtained and analyzed. The maximum absorption in the presented liquid-phase media is found in the wavelength range from 200 to 1100 nm.
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