Janauer G E, Korkisch J, Hubbard S A
Department of Chemistry, State University of New York at Binghamton, N.Y. 13901, U.S.A.
Talanta. 1971 Aug;18(8):767-72. doi: 10.1016/0039-9140(71)80126-1.
Cation-exchange chromatography in a dimethylsulphoxide (DMSO) medium is a suitable means for separating uranium from metal ions, including copper, iron, nickel and molybdenum. Quantitative separations of uranium from 26 elements can best be effected on a column of Dowex 50W-X8 (200-400 mesh), using as the eluent a 20% v/v DMSO solution which is 0.6Min hydrochloric acid and 0.25M in sodium acetate. Only calcium is eluted with the uranium and all other elements studied are eluted either before or after uranium. The elution characteristics of uranium and of other metal ions were investigated with respect to changes in eluent and resin compositions. Separations were much less effective at higher concentrations of sodium ion or DMSO. None of the organic solvents methanol, ethanol, methyl glycol, acetone, dioxan or acetic acid was found to produce favourable separation conditions. Results with Dowex 50 resins of lower or higher cross-linkage were inferior to those obtained with the X8 resin.
在二甲基亚砜（DMSO）介质中进行阳离子交换色谱法是从包括铜、铁、镍和钼在内的金属离子中分离铀的合适方法。使用20%（v/v）的DMSO溶液（该溶液含有0.6M盐酸和0.25M醋酸钠）作为洗脱剂，在Dowex 50W-X8（200 - 400目）柱上能最好地实现从26种元素中定量分离铀。只有钙与铀一起被洗脱，所研究的所有其他元素要么在铀之前要么在铀之后被洗脱。针对洗脱剂和树脂组成的变化研究了铀及其他金属离子的洗脱特性。在较高浓度的钠离子或DMSO条件下，分离效果要差得多。未发现甲醇、乙醇、甲基乙二醇、丙酮、二氧六环或乙酸等有机溶剂能产生有利的分离条件。交联度较低或较高的Dowex 50树脂的分离结果均不如X8树脂。
