摘要
用动态模型方程描述了裂片核素137Cs(实验中用134Cs模拟 )随地下水流在花岗岩中的渗透迁移过程。由渗透曲线拟合求得模型参数———综合扩散 弥散系数和吸附速率常数 ,并在自行设计的水浴恒温槽中 ,进行了134Cs在花岗岩片上的吸附动力学研究。测定不同 pH值和不同温度下的吸附曲线 ,推算出相应条件下的吸附速率常数及不同 pH值时的吸附能。
The permeability of 137 Cs in granite is studied with 134 Cs as its simulation nuclide and the kinetic curves of adsorption are measured in a specially designed cell at different pH and temperatures. The kinetic constants and activation energy are obtained. The corresponding kinetic equation describing the migration of 137 Cs is suggested. A series of the important parameters of diffusion, permeability and adsorption are determined. The calculated and experimentally observed dates are compared and discussed.
出处
《核化学与放射化学》
CAS
CSCD
北大核心
2000年第3期151-155,172,共6页
Journal of Nuclear and Radiochemistry
基金
高等学校博士点基金!资助项目 (980 0 0 1 49)
核工业科学基金!资助项目 (H71 96PY0 0 1 )
