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Extraction of nitrates of alkali and alkaline earth metals with crown ether into hydrophilic ionic liquid in the presence of salting out agent

We show that the hydrophilic liquid N-butyl-4-methylpyridinium tetrafluoroborate is suitable for the extraction of metal ions with dicyclohexyl-18-crown-6. We used magnesium sulfate as salting-out agent, resulting in the formation of two immiscible phases in the ionic liquid-water system. The pH profiles of the extraction of alkali and alkaline earth metals have been determined; the influence of the concentration of the salting-out agent on recovery has been investigated.

Authors:   D. I. Djigailo, S. V. Smirnova, I. I. Torocheshnikova, A. G. Vendilo, K. I. Popov, I. V. Pletnev
Journal:   Moscow University Chemistry Bulletin
Year:   2009
DOI:   10.3103/S0027131409030043
Publication date:   03-Aug-2009
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