Comparative Estimate of Plutonium and Radiocesium in Muscle of Grayling (Thymallus baicalensis) of the Yenisei River

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Abstract

The paper presents the data on the content of plutonium (239,240Pu) in the muscles of the Baikal grayling Thymallus baicalensis, inhabiting the middle reaches of the Yenisei River in the vicinity of the radioactive discharge point of the Mining and Chemical Combine, in 2011–2019. The content of 239,240Pu in grayling muscles varied within 7–32 mBq/kg dry weight. Highest value was recorded in 2019, a year after the increase in the volume of controlled plutonium discharges. The ratio of activity concentrations 239,240Pu/137Cs in grayling muscles compared to the similar ratio in other hydrobionts of the Yenisei indicates a lower bioavailability of plutonium for fish.

About the authors

T. A. Zotina

Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences; Institute of Fundamental Biology and Biotechnology, Siberian Federal University, Krasnoyarsk, Russia

Author for correspondence.
Email: t_zotina@ibp.ru
Russia, Krasnoyarsk; Russia, Novosibirsk

M. S. Melgunov

Institute of Geology and Mineralogy, Siberian Branch, Russian Academy of Sciences

Email: t_zotina@ibp.ru
Russia, Novosibirsk

D. V. Dementyev

Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences

Email: t_zotina@ibp.ru
Russia, Krasnoyarsk

Yu. V. Alexandrova

Institute of Biophysics, Krasnoyarsk Science Center, Siberian Branch, Russian Academy of Sciences

Email: t_zotina@ibp.ru
Russia, Krasnoyarsk

References

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Copyright (c) 2022 Т.А. Зотина, М.С. Мельгунов, Д.В. Дементьев, Ю.В. Александрова

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