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Study of the products of radiation and thermal destruction in the extraction system of 30 vol% TBP–Isopar-M–HNO3

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Abstract

The composition of the products of radiation and radiation-thermal destruction of the PUREX extraction organic phase of 30 vol% TBP in the Isopar-M diluent, pre-saturated with nitric acid, was studied. The composition of the formed functional derivatives was determined as an effect of the concentration of nitric acid, radiation dose and heating temperature. Methods of FTIR and NMR spectroscopies and gas chromatography were applied to analyze the decay products. It was revealed that the nitro-compounds and carboxylic acids dominate among other radiolysis products. The concentration of carboxylic acids in the heated samples sharply increases with the dose of preliminary irradiation.

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Authors and Affiliations

  1. A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of RAS (IPCE RAS), 31/4 Leninsky prospect, Moscow, Russia, 119071

    Zayana Dzhivanova, Mikhail Kadyko, Anton Smirnov & Elena Belova

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  1. Zayana Dzhivanova
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  2. Mikhail Kadyko
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  3. Anton Smirnov
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  4. Elena Belova
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Correspondence to Anton Smirnov.

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Dzhivanova, Z., Kadyko, M., Smirnov, A. et al. Study of the products of radiation and thermal destruction in the extraction system of 30 vol% TBP–Isopar-M–HNO3. J Radioanal Nucl Chem 321, 439–447 (2019). https://doi.org/10.1007/s10967-019-06593-8

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  • DOI: https://doi.org/10.1007/s10967-019-06593-8

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