Archives2021V. 61. №2.pp. 197–205


Radionuclides in the Major Components and Lakeside Soils of the Ecosystem of the lake Malye Kirpichiki (EURT)

V. V. Deryagina S. G. Levinaa, A. V. Akleyevb,c, and A. A. Sutyagina

aSouth Ural State Humanitarian Pedagogical University, Chelyabinsk, Russia bUrals Research Center for Radiation Medicine, Chelyabinsk, Russia cChelyabinsk State University, Chelyabinsk, Russia


piston corer and bentometer C-1) and soil sampling were used to perform a comprehensive study of the radioecological status of the Lake Malye Kirpichiki ecosystem. Radiochemical analysis of the samples was carried out at the Institute of Plant and Animal Ecology of the Russian Academy of Sciences using standard radiological methods of 90Sr and 137Cs determination. It was observed that 90Sr and 137Cs specific activity of the lake water was 39–40 times lower than the intervention limit and could be used for non-public water supply. The sedimentation rate of the bottom sediments of the given lake was calculated. It was revealed that the increase in 137Cs specific activity relative to that of 90Sr and increase in its bioavailability in lake sediments was associated with the formation of the Karachai Radioactive Trace (1967) in the territory of the EURT. Moreover, the differences in the current distribution of 90Sr and 137Cs specific activity by soil profile cut depend on their location in eluvial or superaqual watershed landscape. Herbivorous fish farming in the lake and crop growing in the lakeside territory are not recommended.


radionuclide migration, 90Sr, 137Cs, lake ecosystem, lake sediments, East Urals Radioactive Trace, Karachai Radioactive Trace

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