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Journal of Radioanalytical and Nuclear Chemistry

, Volume 161, Issue 2, pp 437–441 | Cite as

Optimization of a radioanalytical procedure for the determination of uranium isotopes in environmental samples

  • M. Pimpl
  • B. Yoo
  • I. Yordanova
Measurement of Radionuclides in Environmental Studies

Abstract

A radiochemical procedure is described for the fast and sensitive measurement of uranium isotopes in gaseous and liquid effluents of nuclear facilities. Equally, this procedure is suitable to measure uranium isotopes in all kinds of environmental samples. Uranium is leached from ashed sample materials with HNO3, HF, and Al(NO3)3 solution and separated from matrix elements by extraction with trioctylphosphinic oxide and backextraction with NH4F. After radiochemical cleaning by coprecipitation with LaF3 and anion exchange, uranium isotopes are electroplated on stainless steel discs from HCl/oxalate solution. The preparation is measured by alpha-spectrometry using surface barrier detectors. The detection limit for 1000 minutes of counting time is 2 mBq per sample and nuclide, the chemical yield is in the range of 50 to 80%.

Keywords

Uranium HNO3 Anion Exchange Environmental Sample Sample Material 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Akadémiai Kiadó 1992

Authors and Affiliations

  • M. Pimpl
    • 1
  • B. Yoo
    • 2
  • I. Yordanova
    • 3
  1. 1.Central Safety DepartmentKarlsruhe Nuclear Research CenterKarlsruhe(Germany)
  2. 2.Korea Advanced Energy Research InstituteDaejon(Korea)
  3. 3.Institute of Soil Science and AgroecologyBulgarian Academy of AgricultureSofia(Bulgaria)

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