Assessment of biological availability of radionuclides in the soil

This article presents the results of the assessment of the biological availability of radionuclides in the soil. The object of this work is to identify the forms of cesium-137 in the soil and to establishing their quantitative ratio 30 years after the disaster at the Chernobyl nuclear power plant. We were determined the mobility of radiocaesium in the soil, a sequential extraction method was used. Research methods: Research revealed significant differences in the concentration of radiocaesium in the solvents used. The content of radiocaesium in the aqueous extract varied from 0.4 Bq to 5.5 Bq, ammonium acetate varied from 0.3 Bq to 2.8 Bq. The most significant radiocaesium transitions were observed using hydrochloric acid. When we were using 1M hydrochloric acid, radiocaesium content was (0.4-4.2) Bq, at a concentration of 6M (2-88) Bq. Analysis of the dynamics of the content of radiocaesium in the aqueous extract indicates a decrease in the size of the radionuclide transition overall soils...