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Determination of fluorine in zinc ores using an isotope neutron source based automated neutron activation analysis system

  • Physical Methods Section
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Abstract

A method has been developed for routine determination of fluorine in zinc sulfide ores by activation with fast neutrons from a 6.6 Ci227Ac−Be isotope source and counting of the 4.5 to 7 MeV gamma-rays of the product nuclide16N. Samples and standards consist of pellets pressed from a mixture of powdered material with wax or graphite. Samples and standards alternate in a sequence of 20 seconds irradiation, 4 seconds decay and 20 seconds counting. This analysis sequence, including the computation of the analysis results from the counting data automated by means of a LSI-11 Microprocessor with 12K×16 bit memory. The zinc ores, containing 0.3 to 0.7% fluorine have been analysed with a precision ranging from 1.56 to 1.33% relative. As a test for the reliability of the method, three standard reference materials were analysed in the same way as the zinc ore samples.

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Authors and Affiliations

  1. Institute for Nuclear Sciences, Proeftuinstraat 86, B-9000, Gent, (Belgium)

    L. De Norre, J. Op De Beeck & J. Hoste

Authors
  1. L. De Norre
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  2. J. Op De Beeck
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  3. J. Hoste
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De Norre, L., Op De Beeck, J. & Hoste, J. Determination of fluorine in zinc ores using an isotope neutron source based automated neutron activation analysis system. J. Radioanal. Chem. 59, 453–466 (1980). https://doi.org/10.1007/BF02517297

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  • DOI: https://doi.org/10.1007/BF02517297

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