Sr,Cs在不同产地黏土中的吸附  

Adsorption of Sr and Cs by Clay From Different Area

作　　者：康厚军[1] 吴涛[1] 张东[1] 石正坤[1] 

机构地区：[1]中国工程物理研究院,四川绵阳621900

出　　处：《核化学与放射化学》2007年第2期123-128,共6页Journal of Nuclear and Radiochemistry

基　　金：国家自然科学基金NSAF联合基金资助项目(10376028)

摘　　要：采用批式法对不同产地的18种黏土材料进行了^90Sr，^137Cs的吸附分配系数测定，比较了不同材料的吸附性能。结果表明，在吸附达平衡时，浙江沸石对Sr的吸附分配系数为2112．0mL／g；内蒙古赤峰沸石对Cs的吸附分配系数为3495．0mL／g;均位于所有样品之首。产地不同的黏土样品其吸附分配系数差异很大，Sr的吸附分配系数分布在22．4～2112．0mL／g，Cs的吸附分配系数分布在43．5～3495．0mL／g；大部分样品对Cs的吸附大于对Sr的吸附；相同样品对Sr，Cs的吸附性能趋势基本一致。Distribution coefficients of 18 clays to ^90Sr and ^137Cs were determined and the adsorption capability of different material was compared. The results show that zeolite from Zhejiang has an adsorption ratio of 2 112.0 mL/g to Sr which is top in all samples, adsorption ratio of zeolite from Chifeng, Inner Mongolia to Cs is 3 495.0 mL/g, top of all samples. Adsorption ratio of clay samples from different area have great diversity. Adsorption ratio to Sr has a distribution from 22.4 to 2 112.0 mL/g. Adsorption ratio to Cs has a distribution from 43.5 to 3 495.0 mL/g. Adsorption of most samples to Cs are more than that to Sr, and the adsorption capability of same samples to Sr is same to that to Cs.

关 键 词：^90SR ^137CS 黏土 吸附分配系数 

分 类 号：O647.3[理学—物理化学]