Transformation of the chemical composition of the waters of small lakes on Kola Peninsula owing to a decrease in technogenic air pollution and to climate warming

The emission of sulfur dioxide and metals from copper-nickel melting plants on Kola Peninsula (Russia) decreased pronouncedly over the last two decades. The decrease in the sulfate content and increase in the acid-neutralizing capability of waters were proven on the basis of the data of surveys on 7...

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Bibliographic Details
Published in:Doklady earth sciences 2014-05, Vol.456 (1), p.550-553
Main Authors: Moiseenko, T. I., Bazova, M. M., Efimova, L. E.
Format: Article
Language:English
Subjects:
Air pollution
Alkalinity
Chemical composition
Climate change
Earth and Environmental Science
Earth Sciences
Freshwater
Geochemistry
Global warming
Lakes
Nickel
Peninsulas
Sulfates
Sulfur
Sulfur dioxide
Surveys
Transformations
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Summary:The emission of sulfur dioxide and metals from copper-nickel melting plants on Kola Peninsula (Russia) decreased pronouncedly over the last two decades. The decrease in the sulfate content and increase in the acid-neutralizing capability of waters were proven on the basis of the data of surveys on 75 small lakes repeated once every five years from 1990 to 2010. The variations of other parameters of the chemical composition of the waters of small lakes depend on the geological and landscape conditions of the formation of waters. The alkalinity and pH values increased in 46% of the lakes; 24% of them showed a further decrease of these parameters; and no reliable changes were traced in 31% of the lakes. The concentrations of Cu and Ni in the lacustrine water decreased 5-to 10-fold over the last two decades.
ISSN:1028-334X
1531-8354
DOI:10.1134/S1028334X14050171