Chemical composition and water quality of the Baikal ecosystem in 2018

Analysis of the ion composition in the water of the Baikal ecosystem (Lake Baikal, the Angara River estuary and 35 tributaries) in the spring and autumn of 2018 has shown that the water from Baikal and the Angara estuary maintains low mineralization (94-98 mg/l) and corresponds to the calcium bicarb...

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Bibliographic Details
Published in:IOP conference series. Earth and environmental science 2019-08, Vol.320 (1), p.12030
Main Authors: Grebenshchikova, V I, Kuzmin, M I, Yu Suslova, M, Shtykova, Yu R, Doroshkov, A A
Format: Article
Language:English
Subjects:
Anthropogenic factors
Aquatic ecosystems
Bicarbonates
Calcium
Chemical composition
Drinking water
Estuaries
Estuarine ecosystems
Heterotrophic microorganisms
Human influences
Hygiene
Intermediates
Lakes
Microbiological studies
Microorganisms
Mineralization
Pelagic zone
Rivers
Streams
Tributaries
Water quality
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Summary:Analysis of the ion composition in the water of the Baikal ecosystem (Lake Baikal, the Angara River estuary and 35 tributaries) in the spring and autumn of 2018 has shown that the water from Baikal and the Angara estuary maintains low mineralization (94-98 mg/l) and corresponds to the calcium bicarbonate composition. The average chemical composition of the water from the Angara estuary is within the range of minimum-maximum values of the Baikal water. In the water from some tributaries, mineralization is two-three times higher compared to Baikal and the estuary. The average ion composition of the Baikal water intermediates in the range of minimum-maximum values of the studied tributaries. Microbiological studies have shown that the average number of hygiene indicator microorganisms in the water from the tributaries is much higher than in Baikal and the Angara estuary. Unlike the tributaries, the water from Baikal and the Angara estuary contain less number of organotrophic microorganisms. The most extensive Baikal tributaries, which drain the significant and status diverse (anthropogenic and natural) areas around Lake Baikal, definitely have a negative impact on the lake. However, many smaller rivers and streams flowing into Baikal, as well as horizontal and cyclonic currents existing in Baikal, preserve its status as the site with pure drinking water, but only in the pelagic zone of the lake.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/320/1/012030