放射性核素^（137）Cs在石湖峪和阳坊花岗岩上的吸附与迁移特性的研究  

Investigation of sorption and migration of ￣(137)Cs on granites at Shihuyu and Yangfang

作　　者：叶明吕[1] 陆誓俊 王万春[1] 何阿弟[1] 唐志华[1] 徐国庆 张家富 

机构地区：[1]复旦大学,中国核工业总公司北京地质研究院

出　　处：《核技术》1996年第3期176-181,共6页Nuclear Techniques

摘　　要：用间歇法测定了１３７Ｃｓ在石湖峪和阳坊花岗岩上的吸附比和吸附平衡时间，研究了岩石颗粒度、固液比、水相ｐＨ值和核素载体浓度对吸附比的影响，测定了吸附等温线．用柱实验法研究了１３７Ｃｓ在石湖峪和阳坊碎石柱上的迁移行为，测定了阻滞因数和柱分配系数．结果表明：北京石湖峪和阳坊花岗岩对１３７Ｃｓ的吸附能力较差．The behaviors of sorption and migration of 137Cs on granites at Shiliuyu and Yangfang have been investigated by the batch technique and the column experiment.The sorption ratios m and sorption equilibrium time are determined. The effects of granite particle size, solid-to-liquid ratio, pH value of simulated groundwater, and Cs concentration on the Cs sorption ratio are studied. The migration of Cs in granite column are investigsted, and the distribution coefficient KD is determined. The results show that the ability of granites at Shihuyu and Yangfang to adsorb Cs is rather weak. Therafore high efficient backfill materials for Cs are necessary if depository is built on the base of granite.

关 键 词：核素迁移 花岗岩 铯137 柱分配系数 

分 类 号：P595[天文地球—地球化学]