Abstract
The resin (HMOTT') prepared by condensation of 2-hydroxy-4-methoxyacetophenoneoxime and thiourea with trioxane in the presence of acid catalyst, proved to be a selective chelating ion-exchange resin for certain metals. Chelating ion-exchange properties of this resin were studied for Cu 2+, Ni 2+, Co 2+, Mn 2+, Zn 2+, Fe 3+ and UO 2 2+ ions. A batch-equilibration method was employed in the study of the selectivity of metal-ion uptake involving the measurement of the distribution of a given metal ion between the resin sample and a solution containing the metal ion. The study was carried out over a wide pH range and in media of various ionic strengths. The resin showed a higher selectivity for Co 2+, Fe 3+ and UO 2 2+ ions than for Mn 2+, Co 2+ and Zn 2+ ions.
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