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Determination of chromium, iron and copper in niobium by radiochemical proton activation analysis

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Abstract

Chromium, iron and copper were determined in niobium by radiochemical proton activation analysis (PAA). The main steps of the technique involved the irradiation of the samples with 13 MeV protons, the post-irradiation decontamination of the sample surface, a two-step separation procedure based on anion exchange from HF and HCl medium, and counting the separated indicator radionuclides with a well-type NaI detector. For a 5-hr irradiation, limits of detection for chromium, iron, and copper were 0.2, 5.0, and 15 ppb respectively. The results obtained by this technique are compared with data obtained by radiochemical neutron activation analysis (NAA) and atomic absorption spectrometry (AAS).

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Authors and Affiliations

  1. Sektion Analytik und Höchstreinigung der Universität Ulm, Oberer Eselsberg N-26, D-7900, Ulm, FRG

    W. G. Faix & V. Krivan

  2. Bell-Laboratories, Murray Hill, N. J., USA

    J. W. Mitchell

Authors
  1. W. G. Faix
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  2. J. W. Mitchell
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  3. V. Krivan
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Faix, W.G., Mitchell, J.W. & Krivan, V. Determination of chromium, iron and copper in niobium by radiochemical proton activation analysis. J. Radioanal. Chem. 53, 97–106 (1979). https://doi.org/10.1007/BF02517910

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  • DOI: https://doi.org/10.1007/BF02517910

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