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Separation of transition metal ions and preconcentration of platinum (IV) and chromium (III) on alumina-immobilized diethylenetriaminepentaacetic acid by ligand exchange

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Summary

Basic alumina-bonded diethylenetriaminepentaacetic acid (DTPA) has been utilized for the separation and preconcentration of some transition metal ions on the basis of ligand exchange. Breakthrough capacity and rate of sorption have been studied. The distribution coefficients of 16 transition metal ions have been determined in demineralized water, 0.01 M sodium citrate and in four different pH systems. On the basis of differences in Kd values some quantitative separations of metal ions have been achieved. The greater selectivity behaviour (higher Kd values) of the adsorbent for Pt(IV)and Cr(III) has been utilized for their preconcentration in the presence of other metal ions. The method has been employed for the recovery of Pt(IV) and Cr(III) from tapwater and sea-water samples.

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Authors and Affiliations

  1. Department of Chemistry, Harcourt Butler Technological Institute, 208002, Kanpur, India

    D. K. Singh & Pallavi Mehrotra

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  1. D. K. Singh
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  2. Pallavi Mehrotra
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Singh, D.K., Mehrotra, P. Separation of transition metal ions and preconcentration of platinum (IV) and chromium (III) on alumina-immobilized diethylenetriaminepentaacetic acid by ligand exchange. Chromatographia 23, 747–751 (1987). https://doi.org/10.1007/BF02312667

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  • DOI: https://doi.org/10.1007/BF02312667

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