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Speciation of artificial radionuclides 60Co, 137Cs, 152Eu, and 241Am in bottom sediments of the Yenisei river

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Abstract

The speciation of artificial radionuclides 60Co, 137Cs, 152Eu, and 241Am in surface layers of bottom sediments of the Yenisei river, collected within the near zone of impact of the Mining and Chemical Combine (Rosatom), was studied. In these samples the radionuclides 60Co, 152Eu, and 241Am are mainly associated with fractions of humic and fulvic acids. The fraction of 152Eu associated with nonsilicate iron is approximately 92%. The migration capability of radionuclides collected near the Atamanovo settlement decreases in the order 152Eu > 241Am > 60Co > 137Cs. For samples collected near Bol’shoi Balchug settlement, this order is as follows: 152Eu ≈ 241Am > 60Co > 137Cs. The presence of radionuclide-bearing micro-particles in bottom sediments considerably complicates the distribution of radionuclides, in particular, of 241Am and 137Cs, among migration forms.

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Authors and Affiliations

  1. Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Krasnoyarsk, Russia

    L. G. Bondareva & A. Ya. Bolsunovskii

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  1. L. G. Bondareva
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  2. A. Ya. Bolsunovskii
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Original Russian Text © L.G. Bondareva, A. Ya. Bolsunovskii, 2008, published in Radiokhimiya, 2008, Vol. 50, No. 5, pp. 475–480.

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Bondareva, L.G., Bolsunovskii, A.Y. Speciation of artificial radionuclides 60Co, 137Cs, 152Eu, and 241Am in bottom sediments of the Yenisei river. Radiochemistry 50, 547–552 (2008). https://doi.org/10.1134/S1066362208050196

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  • DOI: https://doi.org/10.1134/S1066362208050196

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