中国黄土对^(241)Am吸附特性的实验研究  

EXPERIMENTAL STUDY ON ADSORPTION CHARACTERISTICS OF CHINESE LOESS FOR ^(241) Am

作　　者：安永锋[1] 李书绅[1] 李伟娟[1] 李祯堂 

机构地区：[1]中国辐射防护研究院,太原030006

出　　处：《辐射防护》2003年第6期372-377,共6页Radiation Protection

摘　　要：本文简要介绍超铀核素2 4 1Am(Ⅲ )在中国黄土样品中吸附特性的初步研究结果。以2 4 1Am (Ⅲ )溶液为示踪溶液 ,以黄土为实验介质 ,测定了2 4 1Am (Ⅲ )在未处理黄土、去除CaCO3黄土、去除有机质黄土、以及去除CaCO3和有机质黄土等四种组分不同的黄土介质中的吸附 解吸等温线、平均吸附分配系数和平均解吸分配系数 ,分析讨论了2 4 1Am(Ⅲ )在实验介质中的吸附 解吸机理。实验结果表明 :在实验条件下 ,2 4 1Am (Ⅲ )在四种黄土样品中的吸附 解吸等温线均近似为直线 ;固相成份CaCO3和有机质在黄土吸附2 4 1Am (Ⅲ )This paper gives the results of study on adsorption characteristics of Chinese loess for 241 Am(Ⅲ). The solution of radionuclide 241 Am(Ⅲ) is used as standard trace solution and the loess used as experimental medium in the experiment. These adsorption isothermal curves, average adsorption distribution coefficients and average desorption distribution coefficients are determined for 241 Am(Ⅲ) in loess through 4 kinds of treatments: undisturbed, CaCO 3 removed, organic materials removed and CaCO 3 and organic material removed. The character of adsorption and desorption of experimental media for 241 Am(Ⅲ) are analyzed. Rdsults indicate that under given conditions, the 241 Am(Ⅲ) adsorption isothermal curves are linear for all these soil samples, solid phase component CaCO 3 and organic materials dominate the adsorption process of loess for 241 Am(Ⅲ).

关 键 词：中国 黄土 吸附特性 ^241AM 超铀核素 放射性废物处置 

分 类 号：TL942[核科学技术—辐射防护及环境保护]