^(95)Zr在土壤中的淋溶和迁移分布  

Leaching and Vertical Transference of Zirconium-95 in Soils

作　　者：邵敏[1] 赵希岳[2] 蔡志强[2] 李定龙[1] 冯俊生[1] 王寿祥[3] 

机构地区：[1]江苏工业学院环境与安全工程学院,江苏常州213164 [2]江苏工业学院化学化工学院,江苏常州213164 [3]浙江大学原子核农业科学研究所,杭州310029

出　　处：《农业环境科学学报》2010年第5期895-898,共4页Journal of Agro-Environment Science

基　　金：国家自然科学基金项目(39970147);江苏省环境保护厅项目(2003076)

摘　　要：采用模拟土柱法研究了95Zr在2种淹水土壤(小粉土、红黄壤)中的淋溶和垂直迁移。结果表明:(1)淋溶后收集到的全部淋溶液中95Zr的含量较少,小粉土淋溶液中95Zr为总活度的3.05%,黄红壤淋溶液中95Zr为总活度的3.00%;(2)滞留于土壤中的95Zr绝大部分分布在土壤表层0～1.0cm范围内,小粉土中有67.80%～80.18%的95Zr滞留于0～1.0cm土层范围内,黄红壤中有74.05%～86.95%的95Zr滞留于0～1.0cm土层范围内;(3)土壤中95Zr比活度与距土壤表层深度分布呈单项指数规律。The leaching characteristics and vertical transference of radioactive nuclide zirconium-95 in two representational soils（paddy soil,yellow-red earth）were studied with soil-pole simulation installation.The results showed that：（1）The specific activity of zirconium-95 in collected leachate was low after passing through soil column.The amount of zirconium-95 in leachate of paddy soil was 3.05%,and yellowred earth was 3.00%.（2）In paddy soil and yellow-red earth,67.80%～80.18% and 74.05%～86.95% radioactivity of zirconium-95 was concentrated in the 0～1.0 cm upper layer soils respectively,which illustrated that most of zirconium-95 remained in the surface soils.（3）The specific activity of zirconium-95 in soil present was an individual exponential declining with depth of soil.

关 键 词：95Zr 淋溶 迁移与分布 放射生态学 

分 类 号：X53[环境科学与工程—环境工程]