摘要
利用毛细管法研究pH值对Eu(Ⅲ)在压实皂土中的吸附和扩散影响.结果表明,Eu(Ⅲ)在压实皂土中的扩散随pH值升高而减小,吸附量随pH值升高而增加.皂土密度对放射性核素的吸附和迁移起重要作用.实验结果与Fick定律理论计算值一致.
Effects of pH value on the sorption and diffusion of Eu （ Ⅲ ） in compacted bentonite were studied with the capillary method. The results suggest that diffusion of Eu （ Ⅲ ） in compacted bentonite decreases with increasing pH value. The sorption of Eu （ Ⅲ ） increases with increasing pH value. The intensity of the compacted bentonite, i. e. , the interlaminary space of compacted bentonite, significantly contributes to the diffusion and sorption of radionuclides in compacted bentonite. The results fit the Fick＇s second law very well.
出处
《吉林大学学报（理学版）》
CAS
CSCD
北大核心
2005年第5期654-657,共4页
Journal of Jilin University:Science Edition
基金
中国科学院"百人计划"资助基金(批准号:C03124025)
安徽省教育厅自然科学基金(批准号:2005KJ227)
关键词
毛细管法
皂土
Eu(Ⅲ)
扩散
吸附
capillary method
bentonite
Eu（ Ⅲ ）
diffusion
sorption
