风沙土对放射性核素的吸附与解吸  

Adsorption and Desorption of Radionuclides by Aeolian Sandy Soil

作　　者：何岱[1] 袁世斌[2] 周婷[2] 李福德[2] 李娜[2] 张晋秋[2] 董微[2] 

机构地区：[1]四川省辐射环境管理监测中心站,四川成都610031 [2]中国科学院成都生物研究所,四川成都610041

出　　处：《环境科学导刊》2013年第4期141-143,共3页Environmental Science Survey

基　　金：国家高技术研究发展计划(863计划)资助项目(No.2006AA06Z351)

摘　　要：研究了采自新疆的风沙土对不同放射性核素的吸附与解吸情况。结果表明,风沙土对137Cs的吸附-解吸滞后作用明显,而对90Sr的吸附-解吸滞后作用极微;风沙土对239Pu和238U的平衡吸附量分别为22.54cpm/mg和19.27cpm/mg,粒径为45μm的风沙土能牢固地吸附239Pu和238U。A study has been carried out on the adsorption and desorption of the different radionuclides by the aeoli- an sandy soil taken from Xinjiang Province. The results show that the hysteresis of adsorbing and desorbing 137Cs is obvious, while it is very slight for 90Sr. The equilibrium amount of 239Pu and 23SU adsorption is respectively 22.54 epm/mg and 19.27 epm/mg. The aeolian sandy soil with a particle diameter of 45 μm eould tightly hold 239pu and 238 U.

关 键 词：风沙土 放射性核素 吸附 吸附量 解吸 

分 类 号：X837[环境科学与工程—环境工程]