Abstract
The objective of this work was to study the factors affecting the intake of 90Sr and 137Cs by plants from soils exposed to radioactive contamination resulting from operations of the Mayak Industrial Association. Specific activities of 90Sr and 137Cs in the samples were determined by the radiochemical method. The most severe contamination by 90Sr and 137Cs of natural soils was found in forest soil cover and in the 0-5 cm soil layer. The contamination density of the area is mainly determined by activity in the soil layer 0-20 cm that contains 3-97% of 90Sr and 60-92% of 137Cs. Portions of radionuclides contained in soil (89-96% of 90Sr and 18-73% of 137Cs) can be converted into cationic use. An insignificant share of water-soluble radionuclides goes from soil to agricultural produce.
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