Comparative Study of Plutonium and Radiocaesium Content in the Muscle of Fish of the Yenisey River.

Autor: Zotina TA; Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia. t_zotina@ibp.ru.; Siberian Federal University, Krasnoyarsk, Russia. t_zotina@ibp.ru., Melgunov MS; Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russia., Dementyev DV; Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia., Alexandrova YV; Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch of the Russian Academy of Sciences, Krasnoyarsk, Russia.
Jazyk: angličtina
Zdroj: Doklady biological sciences : proceedings of the Academy of Sciences of the USSR, Biological sciences sections [Dokl Biol Sci] 2022 Oct; Vol. 506 (1), pp. 141-144. Date of Electronic Publication: 2022 Oct 27.
DOI: 10.1134/S0012496622050179
Abstrakt: This work reports the first data on the content of plutonium ( 239+240 Pu) in the muscle tissues of the Northern pike (Esox lucius) and the Siberian dace (Leiciscus baicalensis) inhabiting the middle reaches of the Yenisey River in the vicinity of the radioactive discharge site. An increase in the content of 239+240 Pu and radiocaesium ( 137 Cs) in pike muscles followed an increase in the volume of controlled discharges of these radionuclides to the Yenisey in 2018. The content of 239+240 Pu in the muscles of pike (2-11 mBq/kg dry weight) and dace (1-4 mBq/kg dry weight) of the Yenisey fall within the range of values obtained by other authors for the ichthyofauna from water bodies contaminated with radioactive discharges from nuclear power plants and spent nuclear fuel processing plants. The ratio of the activity concentrations 239+240 Pu/ 137 Cs in fish muscles, compared with the similar ratios in other hydrobionts, indicates a significantly lower bioavailability of plutonium for fish. The obtained preliminary results make it possible to consider the Northern pike as a more prospective indicator of biologically available plutonium in the Yenisey than the dace.
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Databáze: MEDLINE
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