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Neutron activation analysis of uranium via239Np

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Abstract

A method is described for the analysis of uranium by neutron activation. The sample is brought into solution and the neptunium present is reduced to oxidation state (IV); quantitative extraction of239Np in the acidified aqueous phase (0.4<pH<1) is performed with a solution of HTTA (0.2M) in benzene. The use of a low-power reactor (100 kWthermal) enables determination of uranium at a lower concentration limit of 33 ng for periods of irradiation. cooling and measurement of 3 hours, 24 hours and 900 seconds, respectively.

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Authors and Affiliations

  1. Laboratoire de Radiochimie, Université Mohammed V, Rabat, (Maroc)

    S. Fakhi & S. Bouhlassa

  2. Laboratoire de Chimie Nucléaire, Centre de Recherches Nucléaires, B.P. 20, 67037, Strasbourg Cedex, (France)

    J. M. Paulus

Authors
  1. S. Fakhi
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  2. J. M. Paulus
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  3. S. Bouhlassa
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Fakhi, S., Paulus, J.M. & Bouhlassa, S. Neutron activation analysis of uranium via239Np. Journal of Radioanalytical and Nuclear Chemistry Articles 121, 99–107 (1988). https://doi.org/10.1007/BF02041451

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  • DOI: https://doi.org/10.1007/BF02041451

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