Abstract:Leaching characteristics and vertical transference of radioactive nuclide cobalt-60 in two representational soils (paddy soil, yellow-red soil) were studied by using isotope-tracer techniques for soil columns simulation installation. The results showed that the specific activity of cobalt-60 in collected leaching water was low after passing through soil column. The amount of cobalt-60 in leaching water of paddy soil and yellow-red earth was 5.61%, and 5.25%. In paddy soil and yellow-red earth, 69.74%~78.63% and 75.77%~86.84% radioactivity of cobalt-60 was concentrated in the 0~1.0 cm upper layer soils respectively, which illustrated that most of cobalt-60 remained in the surface soils. The specific activity of cobalt-60 in soil present was an individual exponential declining with depth of soil.
赵希岳, 樊国华, 蔡志强, 陈巧丽, 杨百科, 王寿祥. 放射性核素60Co在土壤中的淋溶和迁移分布[J]. 中国环境科学, 2010, 30(8): 1118-1122.
ZHAO Xi-Yue, FAN Guo-Hua, CAI Zhi-Qiang, CHEN Qiao-Li, YANG Bai-Ke, WANG Shou-Xiang. Leaching and vertical transference of radioactive nuclide cobalt-60 in soils. . CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(8): 1118-1122.