Am在花岗岩中的吸附行为  

Sorption Behavior of Americium on Granite

作　　者：贯鸿志[1] 张振涛[1] 苏锡光[1] 龙浩骑[1] 王波[1] 姚军[1] 宋志鑫[1] 陈曦[1] 

机构地区：[1]中国原子能科学研究院放射化学研究所,北京102413

出　　处：《核化学与放射化学》2009年第3期189-192,共4页Journal of Nuclear and Radiochemistry

摘　　要：研究了大气、低氧2种条件下,北山地下水中241Am在花岗岩及其成岩矿物上的吸附行为,观察了pH值、核素浓度以及腐殖酸等多种因素对吸附行为的影响,得到了各种条件下Am在花岗岩上的分配系数,并初步探讨了吸附机理。实验结果表明,花岗岩能很好的吸附241Am,其组分磁黄铁矿在吸附中起主要作用。In this paper,the sorption behavior of Am on granite and its rock-forming minerals in Beishan groundwater under the aerobic and anoxic conditions was studied by batch experiment.The equilibrium time was determined firstly and effects of some factors such as concentration of Am,pH value of aqueous and the presence of humic acid were investigated,and sorption mechanism was discussed simply.The results of the experiment show that granite has great adsorptive capacity of Am,and pyrite plays an important part in the sorption behavior.

关 键 词：AM 吸附 花岗岩 

分 类 号：TL941.21[核科学技术—辐射防护及环境保护]