RADIOACTIVE CONTAMINATION OF THE ICHTHYOFAUNA OF THE CHORNOBYL EXCLUSION ZONE. GLYBOKE LAKE.
Description
The results of the assessment of the dynamics of radionuclide contamination of fish in one of the heavily contaminated water bodies of the Chornobyl Exclusion Zone (ChEZ) - Glyboke Lake for the period 2011-2024 are presented. It was established that the specific activity of 137Cs in the lake's fish fauna continued to decrease during the study period, while the activity of 90Sr, with some exceptions, remained unchanged or increased. In 2021 (before the full-scale invasion of Ukraine by Russian aggressors and their occupation of the ChEZ), the content of radionuclides in fish in the studied reservoir was 180-597 times higher for 90Sr and 7-28 times higher for 137Cs than the permissible levels for fish products in Ukraine. As of 2021, the content of 90Sr in ‘peaceful’ fish species in the lake exceeded the content of 137Cs by 4.5-13.3 times, and in predatory fish this figure was only 1.8-4.2. The absorbed radiation dose rate for fish in Glyboke Lake for 2021 was also calculated.
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15-JBS5252.pdf
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