TY  - JOUR
AU  - Kaglyan, Alexander Ye.
AU  - Gudkov, Dmitri I.
AU  - Belyaev, Volodymyr V.
AU  - Kireev, Sergiy I.
AU  - Yurchuk, Lyudmyla P.
AU  - Pryshlyak, Sergiy P.
AU  - Pomortseva, Natalya A.
AU  - Gupalo, Olena O.
AU  - Men’kovska, Mariya O.
PY  - 2026
DA  - 2026/07/07
TI  - Radionuclide Contamination of Fish in a Dammed Water Body of the Chornobyl Exclusion Zone: A Case Study of the Yanivskyi Backwater
JO  - Advances in Environmental and Engineering Research
SP  - 017
VL  - 07
IS  - 03
AB  - The results of the assessment of the levels of radionuclide contamination of fish in the dammed, conditionally impermeable Yanivskyi backwater of the Pripyat River in the Chornobyl Exclusion Zone (ChEZ) for the period 2008-2025 are presented. It was found that the activity concentration of radionuclides in representatives of the ichthyofauna of the backwater as of 2025 decreased compared to the beginning of our research of this water body in 2008, on average, by 1.6 times for the content of 90Sr, and by 1.4 times for the content of 137Cs (unlike closed water bodies such as lakes of the ChEZ, in which the activity concentration of 137Cs in fish also decreases, and the activity concentration of 90Sr - gradually increases). The activity concentration of radionuclides in fish from the studied water body exceeded the permissible levels (PL) for fish products adopted in Ukraine by 13-111 times for 90Sr and 2-15 times for 137Cs, with PLs of 35 and 150 Bq/kg, respectively. As of 2020-2025, the activity concentration of 90Sr in the prey fish (non-predatory) species from the Yanivskyi backwater of the Pripyat River mainly exceeds the activity concentration of 137Cs by 1.5-11.9 times, and in predatory fish, this indicator was only 0.3-2.6. For comparison, we present data on radionuclide activity concentrations in representatives of the ichthyofauna from several water bodies of the ChEZ. The total radiation dose rate for fish from the Yanivskyi backwater was also estimated, which is within 2.0-8.7 μGy/h. The recorded levels of the average total absorbed dose rate for practically all studied fish of the Yanivskyi backwater exceed the screening dose of 2 μGy/h and are lower than the safe level of 10 μGy/h recommended within the framework of the European Commission’s “PROTECT” project.
SN  - 2766-6190
UR  - https://doi.org/10.21926/aeer.2603017
DO  - 10.21926/aeer.2603017
ID  - Kaglyan2026
ER  -