Non-aqueous solvents in anion-exchange separations
Non-aqueous solvents in anion-exchange separations
复制标题
阴离子交换分离中的非水溶剂
DOI：
10.1016/0039-9140(61)80049-0
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发表时间：
1961
期刊：
影响因子：
6.1
通讯作者：
D. Pietrzyk
中科院分区：
文献类型：
--
作者：
J. Fritz;D. Pietrzyk
测定了阴离子交换树脂与含盐酸的有机溶剂-水混合物之间金属离子的分配系数。有机溶剂的存在使金属离子在较低的盐酸浓度下被吸收。在许多情况下，分配系数明显高于水-盐酸体系。如果其他条件可比较，则醇-水-盐酸中分布系数的顺序为：异丙基>乙基>甲醇。用不同成分的乙醇-水-盐酸混合物进行洗脱，可对金属离子混合物进行柱分离。一些混合物的成功分离已被报道。
Distribution coefficients are measured for the partition of metal ions between anionexchange resin and organic solvent-water mixtures containing hydrochloric acid. The presence of an organic solvent causes metal ions to be taken up at lower hydrochloric acid concentrations. In many cases, distribution coefficients are significantly higher than in water-hydrochloric acid systems. If other conditions are comparable, the order of distribution coefficients in alcohol-water-hydrochloric acid is: isopropyl > ethyl > methyl alcohol. Column separations of metal ion mixtures can be carried out by eluting with alcohol-water-hydrochloric acid mixtures of different compositions. Successful separations of a number of mixtures are reported.