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Coulometric determination of uranium in presence of iron/plutonium using a platinum working electrode

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Abstract

A controlled potential coulometric method for the determination of uranium in the presence of iron or plutonium using a platinum working electrode has been developed. The method consists of reduction of uranium in ∼8M H2SO4 by Ti(III) followed by destruction of excess Ti(III) and selective oxidation of Fe(II) or Pu(III) to Fe(III) or Pu(IV), respectively, by sodium nitrite. The U(IV) is subsequently determined by electrolytic oxidation at Pt electrode using Fe(III) as an intermediate. The method was employed for the determination of uranium in synthetic mixtures of U+Fe and U+Pu containing varying ratios of U/Fe or U/Pu. The precision obtained for uranium results was ∼±0.25%.

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Authors and Affiliations

  1. Fuel Chemistry Division, Bhabha Atomic Research Centre, Trombay, 400 085, Bombay, (India)

    A. R. Joshi & U. M. Kasar

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  1. A. R. Joshi
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  2. U. M. Kasar
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Joshi, A.R., Kasar, U.M. Coulometric determination of uranium in presence of iron/plutonium using a platinum working electrode. Journal of Radioanalytical and Nuclear Chemistry, Articles 150, 483–491 (1991). https://doi.org/10.1007/BF02035335

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  • DOI: https://doi.org/10.1007/BF02035335

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