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<p>The present paper describes the application of dual solvent extraction system comprising of Tri-n-Butyl Phosphate (TBP) in CCl<sub>4</sub> and Tri-n-Octyl Phosphine Oxide (TOPO) in CCl<sub>4</sub> solvents in sequence with phosphoric acid addition for the separation of uranium matrix from uranium based solutions and subsequent quantitative estimation of 23 trace impurities including thorium simultaneously using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Further, optimization of solvent extraction conditions required for simultaneous quantification of thorium and other impurities in the same sample aliquot are also discussed. Besides this, advantages of simultaneous quantification of thorium along with other impurities in the same sample aliquot by ICP-OES have been mentioned in the paper.</p>

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Development of a method for estimation of trace impurities including thorium in uranium based solutions using ICP-OES

  • 期刊论文

  • 发表日期：

    2026年1月27日

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  • Y. Balaji Rao,
  • P. V. Nagendra Kumar,
  • S. N. V. M. S. Gupta,
  • Dinesh Srivastava

摘要

The present paper describes the application of dual solvent extraction system comprising of Tri-n-Butyl Phosphate (TBP) in CCl4 and Tri-n-Octyl Phosphine Oxide (TOPO) in CCl4 solvents in sequence with phosphoric acid addition for the separation of uranium matrix from uranium based solutions and subsequent quantitative estimation of 23 trace impurities including thorium simultaneously using Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES). Further, optimization of solvent extraction conditions required for simultaneous quantification of thorium and other impurities in the same sample aliquot are also discussed. Besides this, advantages of simultaneous quantification of thorium along with other impurities in the same sample aliquot by ICP-OES have been mentioned in the paper.