Natural Radionuclides in Groundwater From J-13 Well at the Nevada Test Siteby J. C. Laul, Pacific Northwest Lab, United States,
T. C. Maiti, Pacific Northwest Lab, United States,
Abstract: The concentrations of U-238 and Th-232 chain members are extremely low in J-13 water, suggesting that their concentrations in groundwaters are largely governed by sorption/desorption processes. Relative to radon (gas), uranium, thorium, radium and polonium radionuclides are highly sorbed in a tuffaceous matrix, and the retardation factors range from 102 to 105. Uranium, unlike Th, is in the +6 state and is soluble as carbonate complex (UO2CO3), and the aquifer's environment is oxidizing. There is no colloidal effect down to <0.10 μm.
Subject Headings: Radioactive materials | Wells (water) | Water resources | Groundwater | Uranium | Sorption | Matrix (mathematics) | Radon | North America | United States | Nevada | Colorado
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