Influence of Radionuclide's on Farmland Soil and Creek Sediment Around a Uranium Mine in the Southwest of China

摘要

The farmland soil and creek sediments in different depth in the mining area were sampled, and their content of ~(238)U, ~(226)Ra and ~(232)Th were determined by gamma spectrometric method to assess the impact of the soil environment by single index method. The result shows ~(232)Th was not influenced on soil in survey area. ~(226)Ra influenced more seriously than ~(238)U on farmland soil, meanwhile, the farmland soil at downstream of tailings dam was contaminated seriously by radionuclides than at other places. For creak sediments, adit water resulted in more serious pollution by ~(238)U than ~(226)Ra, however, tailings erosion resulted in more serious pollution by ~(226)Ra than ~(238)U.