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Precipitation of Am(III) and REE peroxides from alkaline solutions containing complexing agents

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Abstract

Precipitation of Am(III) and REE peroxides from alkaline-citrate solutions was studied spectrophotometrically. Hydrogen peroxide (0.25–0.4 M) quantitatively precipitates Am(III) and Nd(III) ions from a solution containing 0.1 M NaOH and 0.2–0.4 M citrate. After H2O2 decomposition, the precipitates formed are dissolved in the mother liquor. At lower alkali concentration, 4f and 5f metal ions are precipitated incompletely. In the systems studied, Am and Nd form citrate and hydroxo-citrate complexes in a solution and peroxides in the solid phase.

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Authors and Affiliations

  1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, Moscow, Russia

    A. V. Gogolev, M. V. Nikonov, I. G. Tananaev & B. F. Myasoedov

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  1. A. V. Gogolev
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  2. M. V. Nikonov
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  3. I. G. Tananaev
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  4. B. F. Myasoedov
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Translated from Radiokhimiya, Vol. 46, No. 6, 2004, pp. 524–526.

Original Russian Text Copyright © 2004 by Gogolev, Nikonov, Tananaev, Myasoedov.

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Gogolev, A.V., Nikonov, M.V., Tananaev, I.G. et al. Precipitation of Am(III) and REE peroxides from alkaline solutions containing complexing agents. Radiochemistry 46, 570–573 (2004). https://doi.org/10.1007/s11137-005-0029-2

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  • DOI: https://doi.org/10.1007/s11137-005-0029-2

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