High-Speed Radiochemical Separations by Liquid-Liquid Chromatography Using a CSP Support. II. Separation of Metal Ions Using Tricaprylmethylammonium Chloride on Zipax
- 1 April 1974
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Chromatographic Science
- Vol. 12 (4) , 200-205
- https://doi.org/10.1093/chromsci/12.4.200
Abstract
High-speed radiochemical separations of metal ions by LLC were carried out on 3- and 5-cm vacuum packed columns containing 1 w/o tricaprylmethylammonium chloride (TCMA · Cl) on 27 and 19 μ diameter Zipax. Separations were based on differences in the extractabilities of chloride-, nitrate-, and thiocyanate-metal ion complexes by the quaternary amine stationary phase. The metal ions were sequentially eluted, usually by step-changes in mobile phase concentration. Elution times were one to two orders of magnitude faster and concentration profiles were narrower with less tailing than analogous anion exchange separations and LLC separations using porous supports. Most of the metal ions selected for study were in the region of Z = 79–84 because of the expected similarity to the super-heavy elements. High-speed U, Th, and Pu and lanthanide-transplutonium element separations were also studied.Keywords
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