Abstract
In calcareous soils from Yakutia only 0.1 % or less 239Pu and 241Am exist in water-soluble form, i.e., the mobility of these radionuclides is relatively low. In the top humus-containing layer (0–4 cm) 239Pu and 241Am are distributed uniformly between organic and inorganic soil components. In the bottom soil layer (20–30 cm) the radionuclides are present mainly in inorganic soil components. The estimation of the radionuclide mobility demonstrates that 241Am is potentially a more mobile element than 239Pu. In the considered calcareous soils collected from the top layer 239Pu and 241Am exist both in humic and fulvic acids (FA). 241Am is much stronger bound to the group of mobile FA than 239Pu. In the bottom soil layer 239Pu and 241Am have been found mainly in FA.
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Acknowledgments
The research was financially supported by Russian Foundation for Basic research (Project No. 14-05-00181) and Ministry of Education and Science (Federal Targeted Program for Research and Development in Priority Areas of Development of the Russian Scientific and Technological Complex for 2014-2020 (Agreement No. 14.604.21.0095 UIS RFMEFI60414X0095).
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Novikov, A.P., Goryachenkova, T.A., Sobakin, P.I. et al. Speciation of plutonium and americium in the soils affected by Kraton-3 accidental underground nuclear explosion in Yakutia (Russia). J Radioanal Nucl Chem 307, 691–697 (2016). https://doi.org/10.1007/s10967-015-4195-1
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DOI: https://doi.org/10.1007/s10967-015-4195-1