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Synthesis and Characterization of a New Cation exchanger-zirconium(IV)iodotungstate: Separation and Determination of Metal Ion Contents of Synthetic Mixtures, Pharmaceutical Preparations and Standard Reference Material

Synthesis and Characterization of a New Cation exchanger-zirconium(IV)iodotungstate: Separation and Determination of Metal Ion Contents of Synthetic Mixtures, Pharmaceutical Preparations and Standard Reference Material

Syed A Nabi, Alimuddin, Aminul Islam

J Hazard Mater. 2009 Dec 15;172(1):202-7.

PMID: 19656628

Abstract:

Samples of zirconium(IV)iodotungstate have been synthesized under varying mixing order and ratios of aqueous solution of potassium iodate, sodium tungstate and zirconium oxychloride at pH 1. A tentative formula was proposed on the basis of chemical composition, FTIR and thermogravimetric studies. The material shows a capacity of 0.68 meq g(-1) (for K+) which can be retained up to 200 degrees C. pH titration data reveal its monofunctional behavior. The distribution coefficient values of metal ions have been determined in various solvent systems. A number of important and analytically difficult quantitative separations of metal ions have been achieved using columns packed with this exchanger. In order to demonstrate practical utility of this material, Hg2+ and Pb2+ have been selectively separated and determined in the synthetic mixtures. Assay of Al3+ and Mg2+ in commercial tablets and analysis of lead in the standard reference material have also been attempted.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13520780	Tungsten(VI) oxychloride		13520-78-0	Price

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