Author(s)

Bondareva Lydia, Artamonova Svetlana

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Discharges from the Mining-and-Chemical Com- bine (MCC) of Rosatom, downstream from Krasnoyarsk-26, near of the Krasnoyarsk resulted in radioactive contamination of sedi-ments of the River Yenisei. The concentration of artificial gammaemitting radionuclides (¹³⁷Cs, ⁶⁰Co, ¹⁵²Eu, and ²⁴¹Am) was determined to analyze the migration processes leading to the transport of these radionuclides. The concentration of artificial radionuclides in the surface layers of the studied area varied in wide ranges: ¹³⁷Cs – 318 - 1800 Bq/kg, ⁶⁰Co – 87 - 720 Bq/kg, ¹⁵²Eu – 12 - 287 Bq/kg and ²⁴¹Am – 6 - 76 Bq/kg. There was a sequence of migration of radionuclides investigated in the surface layer of sedi-ments that were collected in the near zone of influence of the MCC: ²⁴¹Am ≈ ¹⁵²Eu >⁶⁰Co >¹³⁷Cs. Radionuclide species have been found to be directly related to sediment structure and composition.

Geochemical Properties, Sediments, Radionuclides, Correlation, the Yenisei River

Lydia, B. and Svetlana, A. (2011) The relationship of mineral and geochemical composition to artificial radionuclide partitioning inYenisei river sediments downstream frommining-and-chemical combine rosatom. Natural Science, 3, 517-529. doi: 10.4236/ns.2011.37073.