Am在花岗岩中的吸附行为

Sorption Behavior of Americium on Granite

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。

Abstract: 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.