Determination of Distribution Ratios and Diffusion Coefficients of Neptunium, Americium and Curium in Soil-Aquatic Environments. Annual Report, August 1, 1975--July 31, 1976.

摘要

Distribution ratios for exp 241 Am(III), exp 244 Cm(III), and exp 237 Np(V) were measured as a function of time in 12 soils of varying characteristics. Experiments were performed to obtain diffusion coefficients for exp 237 Np(V) and exp 241 Am(III) in soils where distribution ratios were reasonably constant. Some physical and chemical characteristics of each soil were determined in an effort to better understand the factors that may influence the distribution ratios and diffusion coefficients. Experiments were also carried out to determine the extent of radiocolloid formation of Am(III) and Np(V) by an alpha track method and by centrifugation and filtration techniques. Coprecipitation of exp 241 Am(III), exp 237 Np(V) and exp 244 Cm(III) by iron and manganese hydroxides in synthetic seawater was also studied. (ERA citation 02:046293)