Abstract
Abstract Samples of stannic selenophospnate have been synthesized by mixing 0.05m aquous solutions of stannic chloride, sodium selenite and sodium dihydrogen phosphate in different volume ratios at pH = 1. The chemical compositions have been determined. The Tin, Selenium and Phosphorous contents of all these samples have been found to be in the ratio of 1:1:1. Sample with a high ion exchange capacity (1.63 meq/ dry gm) has been studied in detail. pH titrations, IR and X-ray analysis, distribution coefficients of metal ions in different systems were performed. The differential selectivity of metal ions on stannic selenophosphate has been utilized for the important separations. Fourteen quantitative separations of industrial and analytical-importance have been achieved on its column. A comparison of the important properties of stannic selenophosphate have been made with stannic tungsto-arsenate, stannic molybdoarsenate, stannic arsenophosphate, stannic vanadophosphate, stannic phosphate and stannic selenite...
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