Sorption of Np(V) on Montmorillonite from Solutions of MgCl2 and CaCl2

被引：6
|
作者：
Mironenko, M. V. [1 ]
Malikov, D. A. [1 ]
Kulyako, Yu. M. [1 ]
Myasoedov, B. F. [1 ]
机构：
[1] Russian Acad Sci, Vernadsky Inst Geochem & Analyt Chem, Moscow, Russia
来源：
RADIOCHEMISTRY | 2006年 / 48卷 / 01期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1134/S1066362206010140
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The Np(V) distribution coefficients between montmorillonite and solutions of MgCl2 and CaCl2 were determined experimentally. The Np sorption decreases with increasing concentration of the supporting electrolyte. The sorption is very fast within the first several hours after the start of the experiment and then decelerates, reaching the equilibrium in approximately two weeks. The constants of binary ion exchange NpO2+-Mg2+ and NpO2+-Ca2+ on montmorillonite determined by fitting the experimental results are logK(NpO2)(+)-Mg2+ = 0.083 +/- 0.03 and logK(NpO2)(+)-Ca2+ = 0.106 +/- 0.014.
引用
收藏
页码：69 / 74
页数：6
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