Selective retention of alkali metals on cation-exchange resins: Rapid separation of alkali metals from other metals |
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| Affiliation: | 1. Shanxi Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China, Taiyuan 030051, People''s Republic of China;2. Chemical Department, North University of China, Taiyuan 030051, People''s Republic of China;1. University of Chemistry and Technology, Prague, Department of Physical Chemistry, Technická 5, 166 28 Prague 6, Czech Republic;2. University of Chemistry and Technology, Prague, Laboratory of Molecular Spectroscopy, Technická 5, 166 28 Prague 6, Czech Republic;3. Institute of Organic Chemistry and Biochemistry of the Academy of Sciences of the Czech Republic, Central Analytical Laboratory, Flemingovo nám. 2, 166 10 Prague 6, Czech Republic;4. Institute on Membrane Technology, Department of Physical Chemistry, Via Pietro Bucci, Cubo 17C, 870 36, Rende, CS, Italy |
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| Abstract: | The alkali metals, as a group, can be rapidly separated from multivalent metals by batchwise precomplexing of the multivalent metals with EDTA at pH 8 and passing the solution through a cation resin in the tetramethylammonium ion form. After isolation of the alkali metals on the resin, they can be rapidly eluted as a group and concentrated. Separations of the alkali metals from the alkaline earths and cadmium are illustrated. Variables affecting the efficiency of alkali metal uptake have been studied in detail. |
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