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Marina A. Avvakumova, Natalia N. Yashchenko, Svetlana V. Zhitar, Elena G. Zinovjeva, Anatoly N. Lyshikov
Test system for
determining dissolved oxygen in water objects
Abstract
Abstract. A test system has been developed
for determining the dissolved oxygen content in water in the range from 0 to 14
mg/l, consisting of a tablet, an ampoule and an indicator scale. Testing was
carried out on eight water bodies of the Yadrinsky district of the Chuvash Republic:
the rivers Sura, Vyla, Arbashka, Mochkaushka, lakes Sergach and “Round Pit” and
the Mirsky pond. Samples were taken in June 2024 in accordance with GOST
59024-2020. The reliability of the results was confirmed by the Winkler
iodometric titration method. It was established that water samples for the
content of dissolved oxygen in the considered reservoirs are at a level of at
least 6 mg/l, which corresponds to the norms of the regulatory document RD
52.24.419-2019 for fishery facilities in the summer.
Key words: dissolved oxygen, test system,
Winkler method, water, indigo carmine
Copyright (C) Chemistry Dept., Moscow State University, 2002
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