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Determination of 99Tc in bentonite clay samples using inductively coupled plasma mass spectrometry

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Abstract

A method was developed for the determination of 99Tc at low concentrations in clay samples. The chemical treatment of the samples prior to chemical separation and analysis comprised leaching with sulphuric acid/ sodium bromate. After leaching, pertechnetate was extracted with Alamine-336/chloroform and then back-extracted into nitric acid. Detection was carried out using inductively coupled plasma mass spectrometry, ICP-MS. The instrumental detection limit was 0.45 pg/mL, which corresponds to 0.28 mBq/mL. With the use of a desolvating nebuliser, the detection limit was lowered by about a factor of five. The results were compared with a method using radiometric detection.

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Authors and Affiliations

  1. Department of Nuclear Chemistry, Chalmers University of Technology, S-412 96 Göteborg, Sweden, , , , , , SE

    H. Ramebäck, Y. Albinsson & M. Skålberg

  2. Studsvik Nuclear AB, Hot Cell Laboratory, S-611 82 Nyköping, Sweden, , , , , , SE

    U. B. Eklund

Authors
  1. H. Ramebäck
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  2. Y. Albinsson
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  3. M. Skålberg
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  4. U. B. Eklund
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Additional information

Received: 16 April 1998 / Revised: 12 June 1998 / Accepted: 16 June 1998

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Ramebäck, H., Albinsson, Y., Skålberg, M. et al. Determination of 99Tc in bentonite clay samples using inductively coupled plasma mass spectrometry. Fresenius J Anal Chem 362, 391–394 (1998). https://doi.org/10.1007/s002160051091

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  • DOI: https://doi.org/10.1007/s002160051091

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