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Determination of elemental impurities in phosphoric acid by INAA employing a novel method of phosphate precipitation

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Abstract

Banned irradiation of liquid acids in many nuclear reactors requires a transformation of these compounds into a solid substance to be able to perform the determination of impurities using instrumental neutron activation analysis. For this purpose, a novel, simple, and contamination-free procedure for the transformation of phosphoric acid into ammonium phosphate has been developed, which is based on isothermal distillation of ammonia vapours. Favourably low detection limits for more than 35 elements have been achieved and the accuracy of the results has been established by analysis of NIST SRM 1515 Apple Leaves.

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Acknowledgments

This work was carried out within the IAEA Technical Cooperation project MOR 13014-MOR/1/007 and supported by the Czech Science Foundation, grant P108/12/G108.

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Authors and Affiliations

  1. Nuclear Physics Institute, ASCR, Husinec-Řež 130, 25068, Czech Republic

    Jan Kameník & Jan Kučera

  2. Centre national de l’énergie, des sciences et des techniques nucléaires (CNESTEN), 10001, Rabat, Morocco

    Hamid Amsil

Authors
  1. Jan Kameník
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  2. Hamid Amsil
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  3. Jan Kučera
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Correspondence to Jan Kameník.

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Kameník, J., Amsil, H. & Kučera, J. Determination of elemental impurities in phosphoric acid by INAA employing a novel method of phosphate precipitation. J Radioanal Nucl Chem 304, 157–162 (2015). https://doi.org/10.1007/s10967-014-3499-x

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  • DOI: https://doi.org/10.1007/s10967-014-3499-x

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