2016 Volume 133 Pages 29-36
Transport of 137Cs in soil may be important to establish a decontamination scheme for contaminated ar-eas. As a monovalent cation 137Cs is supposed to be trans-ported by diffusion and convection processes like other aqueous cations, soil hydraulic properties rule the trans-port. To provide a simulation model with basic physi-cal properties, we investigated clay minerals and hydraulic properties of soils collected from the rice paddies of 15 locations in Iitate Village. Because all the soil samples mostly contained Al-vermiculite, illite, and chlorite that tended to fix 137Cs in their structures, 137Cs might stay near the surface layer for a long time but might not contaminate groundwater.
