Soil-soil solution distribution coefficients for Se, Sr, Sn, Sb, and Cs in Japanese agricultural soils

One of the key parameters required in modeling the behavior dynamics of radionuclides in soils is the soil-soil solution distribution coefficient (Kd). In order to provide a more practical model, it is needed to obtain many Kd data for each important radionuclide in various soil groups, and to determine soil properties which influence variation in Kd values using the collected data. Many studies using Kd have done, however, there is few study using collected Kd data sufficient for statistical analysis. In this study, 142 of agricultural soil samples were collected throughout Japan, and Kd data was determined for five radionuclides, which are selenium-75 (Se-75), strontium-85 (Sr-85), tin-112 (Sn-112), antimony-124 (Sb-124), and cesium-137 (Cs-137). Then, the relationships between Kd values for each radionuclide and soil properties were discussed using statistical analysis. The knowledge obtained is useful for a precise long-term dose assessment.the 34th Waste Management Symposium (WM\u2708