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Column chromatographic separation of thorium (IV) from associated elements using poly-(dibenzo-18-crown-6) from sodium nitrate medium

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Abstract

A simple column chromatographic method has been developed for the separation of thorium from associated elements using poly-(dibenzo-18-crown-6). The separations are carried out from sodium nitrate medium. The adsorption of thorium was quantitative from 0.1-0.5M sodium nitrate. Amongst the various eluents tested, 1.0-8.0M HCl, HBr, H2SO4 and 3.0-8.0M HClO4 were found to be particularly efficient for e elution of thorium. The capacity of poly-(dibenzo-18-crown-6) for thorium was found to be 1.034 mmole/g of crown polymer. Thorium was arated from number of elements in binary mixtures in which most of the elements showed a very high tolerance limit. It was possible to separate tium from a number of elements in multicomponent mixtures. The method was extended to the determination of thorium in monazite sand and ga: artles. The method is very simple, rapid, selective and has good reproducibility (approximately±2%).

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Authors and Affiliations

  1. Environmental Analytical Chemistry Laboratory, Department of Chemistry, Shivaji University, 416004, Kolhapur, India

    B. S. Mohite, S. H. Burungale & B. E. Mahadik

Authors
  1. B. S. Mohite
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  2. S. H. Burungale
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  3. B. E. Mahadik
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Mohite, B.S., Burungale, S.H. & Mahadik, B.E. Column chromatographic separation of thorium (IV) from associated elements using poly-(dibenzo-18-crown-6) from sodium nitrate medium. J Radioanal Nucl Chem 230, 311–314 (1998). https://doi.org/10.1007/BF02387488

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  • DOI: https://doi.org/10.1007/BF02387488

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