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The redox chemistry of neptunium in γ-irradiated aqueous nitric acid in the presence of an organic phase Public Deposited

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  • The redox chemistry of neptunium in gamma-irradiated aqueous nitric acid in the presence of an organic phase
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  • The radiolytic changes in oxidation state for solutions of initially Np(V) and/or Np(VI) were investigated by gamma-irradiation in conjunction with UV/Vis spectroscopy of the aqueous phase. Samples were irradiated in varying concentrations of nitric acid, and with or without the presence of 30 % TBP in dodecane. At short irradiation times Np(V) was oxidized to Np(VI), even in the presence of the organic phase. Upon the radiolytic production of sufficient amounts of nitrous acid, reduction of Np(VI) to Np(V) occurred in both phases. This was accompanied by stripping of the previously extracted Np(VI). Nitric acid concentrations of 6 M mitigated this reduction.
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  • Mincher, B. J., Precek, M., & Paulenova, A. (2016). The redox chemistry of neptunium in γ-irradiated aqueous nitric acid in the presence of an organic phase. Journal of Radioanalytical and Nuclear Chemistry, 308(3), 1005-1009. doi:10.1007/s10967-015-4530-6
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  • This work was supported by the Idaho National Laboratory LDRD program, under DOE Idaho Operations Office contract DE-AC07-99ID13727. During 2012-2015, M. Precek was supported with post-doc funding by the European Social Fund and the state budget of the Czech Republic (Project No. CZ.1.07/2.3.00/30.0057).
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  • description.provenance : Approved for entry into archive by Patricia Black(patricia.black@oregonstate.edu) on 2016-07-26T18:19:47Z (GMT) No. of bitstreams: 2 krauserp1417782355.zip: 396357 bytes, checksum: b75904e257b199331ea9f684929eb3b1 (MD5) MincherRedoxChemistryofNeptunium.pdf: 646320 bytes, checksum: 1a375dd8e0355f2cbb25163d25ebe811 (MD5)
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