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Hydrobiological Journal
SJR: 0.227 SNIP: 0.901 CiteScore™: 0.5

ISSN Imprimir: 0018-8166
ISSN On-line: 1943-5991

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Hydrobiological Journal

DOI: 10.1615/HydrobJ.v44.i5.100
pages 87-104

Dynamics of the Content and Distribution of the Main Dose Forming Radionuclides in Fishes of the Exclusion Zone of the Chernobyl NPS

D. I. Gudkov
Institute of Hydrobiology, National Academy of Sciences of Ukraine, Kyiv

RESUMO

Results of the study of dynamics of the content and distribution of 90Sr, 137Cs, and also of transuranium elements, in fishes of the exclusion zone of the Chernobyl NPS are analyzed. The capacity of the absorbed dose from the incorporated radionuclides in phytophilous and predatory species of fishes was estimated. It has been found that in fishes of lake ecosystems of the left bank floodplain of the Pripyat river the specific activity of 90Sr increased. It is likely that this phenomenon was conditioned by dynamics of physical and chemical forms of this radionuclide in the soil, and also by its influx into the water bodies from the catchment area. At present about 90% of the capacity of the inner dose of irradiation of fishes of the closed water bodies of the exclusion zone of the Chernobyl NPS is conditioned by the incorporation of 90Sr.


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