CORRELATION OF THE EXTRACTION OF STRONTIUM NITRATE BY A CROWN ETHER WITH THE WATER CONTENT OF THE ORGANIC PHASE*
- 1 February 1990
- journal article
- research article
- Published by Informa UK Limited in Solvent Extraction and Ion Exchange
- Vol. 8 (1), 199-208
- https://doi.org/10.1080/07366299008917994
Abstract
A simple correlation has been observed between the extraction of strontium nitrate from nitric acid solution by cis-dicyclohexano-18-Crown-6 dissolved in a variety of oxygenated, aliphatic diluents and the molarity of water present in the organic phase. This correlation is attributed to the extraction of the hydrated nitrate ion and its solvation by the diluent, facilitated by the high concentration of dissolved water. Of the solvents studied, ketones yield the largest values of the extraction constant for a given water content, although C5 and C6 alcohols give the highest overall values.Keywords
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