On the influence of soil properties on the transfer of ~(137)Cs from two soils (Chromic Luvisol and Eutric Fluvisol) to wheat and cabbage

摘要

Two types of soils (Eutric Fluvisol and Chromic Luvisol) and two crops (wheat and cabbage) were investigated for determination of the transfer of ~(137)Cs from soil to plant. Measurements were performed using gamma-spectrometry. Results for the soil characteristics, transfer factors of the radionuclides (TF), and conversion factors (CF) (cabbage/wheat) were obtained. The transfer of ~(137)Cs was higher for Chromic Luvisol for both the plants. Statistically significant dependence of TF of ~(137)Cs on its concentration in soil was established for cabbage. Dependence between K content in the soil and the transfer factor of ~(137)Cs was not found due to the high concentrations of available K. Use of bioconcentration factor (BCF) (ratio between the activity concentration of a radionuclide in a reference plant to its concentration in another plant) is demonstrated and proposed for risk assessment studies.