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Uranium speciation in coal fragments of radioactively contaminated soil

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A Correction to this article was published on 03 February 2022

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Abstract

The shutdown of the Uranium Conversion plant and transfer of the territory to nonnuclear technologies requires management of large volumes of low-level radioactive waste. In this work, coal samples of contaminated soil collected at the territory of closed Sublimate Production Plant Angarsk Electrochemical Combine were analysed using X-ray absorption spectroscopy. By the comparison with reference samples, U oxidation state and speciation in coal fragments were determined. In contaminated coal samples, U is present as uranyl cation \({\text{U}}{\text{O}}_{2}^{{{2} + }}\) predominantly bound to natural organic matter. Understanding of U speciation in the most contaminated fraction of the soil is essential for low-level nuclear waste management.

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Acknowledgements

This work was financially supported by the Russian Science Foundation Grant No. 19-73-20051 (IV and AK—conceptualization, synthesis of standards, Raman spectroscopy, PXRD and recording of EXAFS spectra) and the Russian Ministry of Science and Education Grant No. 075-15-2019-1891 (AK and AT—analysis of EXAFS spectra).

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Authors and Affiliations

  1. Lomonosov Moscow State University, Moscow, Russia

    Anna Krot & Irina Vlasova

  2. National Research Center «Kurchatov Institute», Moscow, Russia

    Alexander Trigub

Authors
  1. Anna Krot
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  2. Irina Vlasova
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  3. Alexander Trigub
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Correspondence to Anna Krot.

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On behalf of all authors, the corresponding author states that there is no conflict of interest.

Data availability

The datasets generated during and/or analyzed during the current study are available from the corresponding author on reasonable request.

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This article was updated to fix a typo in the abstract.

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Krot, A., Vlasova, I. & Trigub, A. Uranium speciation in coal fragments of radioactively contaminated soil. MRS Advances 7, 144–148 (2022). https://doi.org/10.1557/s43580-022-00211-8

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  • DOI: https://doi.org/10.1557/s43580-022-00211-8

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