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Neutron activation determination of rheumium in rocks and ores after preliminary extraction with pyridine

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Abstract

A simple neutron-activation method for the determination of rhenium based on a preliminary extractive separation of the latter from molybdenum and tungsten is described. The sample is decomposed with sodium peroxide, a small amount of water is added and the resulting pulp is extracted with pyridine. The extract is evaporated to dryness, the residue is dissolved in water and the solution is passed through a column packed with Dowex 50WX8 in H+ form to eliminate the metal impurities. The HReO4 passed, after neutralization with ammonia, is evaporated to dryness in penals, which then are irradiated with thermal neutrons.

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Authors and Affiliations

  1. Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, 1113, Sofia, (Bulgaria)

    M. Pavlova, N. Jordanov & S. Gabrovska

  2. Institute of Nuclear Research and Nuclear Energetics, 1113, Fofia, Bulgarian Academy of Sciences, (Bulgaria)

    M. Michailov

Authors
  1. M. Pavlova
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  2. N. Jordanov
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  3. M. Michailov
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  4. S. Gabrovska
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Pavlova, M., Jordanov, N., Michailov, M. et al. Neutron activation determination of rheumium in rocks and ores after preliminary extraction with pyridine. J. Radioanal. Chem. 46, 81–86 (1978). https://doi.org/10.1007/BF02519731

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  • DOI: https://doi.org/10.1007/BF02519731

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