Kinetic investigation of Eu(III)-humate interactions by ion exchange resins.
Kinetic investigation of Eu(III)-humate interactions by ion exchange resins.
复制标题
DOI：
10.1021/ac020668r
复制
发表时间：
2003-05
影响因子：
7.4
通讯作者：
Jean-Marc Monsallier;W. Schüssler;G. Buckau;T. Rabung;Jae-Il Kim;Dominic M. Jones;Rose E. Keepax;N. Bryan
中科院分区：
文献类型：
--
作者：
Jean-Marc Monsallier;W. Schüssler;G. Buckau;T. Rabung;Jae-Il Kim;Dominic M. Jones;Rose E. Keepax;N. Bryan
与水性胶体结合的放射性核素的动力学稳定性是它们从放射性废物储存库迁移的决定因素。阳离子交换剂 Chelex-100、Dowex 50Wx4 和 Cellphos（磷酸纤维素）已被证明是一种很有前景的动力学研究工具。本研究评估了不同交换树脂在铕腐植酸盐解离动力学研究中的适用性。发现所有树脂都能产生令人满意的结果。对影响 Eu(III) 腐植酸盐复合物解离速率的参数进行了系统研究。一组纯化的腐殖质被发现具有相同的行为。然而，未纯化的 Aldrich 腐植酸表现出显着差异。
The kinetic stability of radionuclides bound to aqueous colloids is a determining factor in their migration from a radioactive waste repository. The cation exchangers Chelex-100, Dowex 50Wx4, and Cellphos (cellulose phosphate) have been shown a promising tool for kinetic investigations. This study assesses the applicability of different exchange resins for Eu humate dissociation kinetics investigations. All resins were found to produce satisfactory results. A systematic study of parameters affecting the dissociation rates of Eu(III) humate complexes was performed. A set of purified humic substances was found to behave in the same way. However, unpurified Aldrich humic acid showed significant differences.