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Improvement of Am and Cm determination in soil samples

  • M. Pimpl
  • R. H. Higgy
Article

Abstract

The determination of Am and Cm in a radiochemical procedure for the sequential analysis of Pu, Am, and Cm in soils was improved and optimized. This method uses only solvent extraction and extraction chromatography for the separation and cleaning of Am and Cm from soils up to 50 g sample weight. After leaching with 8M nitric acid, Pu is extracted with TOPO/cyclohexane. Am and Cm are extracted out of the remaining leaching solution at pH 1 with TOPO/cyclohexane, too. After backextraction with 2M nitric acid, Am and Cm are separated from traces of matrix elements, especially Fe, on a TRU-column, afterwards on a TEVA-column from lanthanides (TRU-resin and TEVA-resin of Eichrom Europe, SARL, Paris, France). The clean Am/Cm-fraction is electroplated and measured by alpha-spectrometry. The detection limit of this optimized procedure is 0.03 Bq/kg soil at a 95% confidence level.

Keywords

HCOOH HDEHP Radiochemical Procedure TEVA Resin Nuclear Installation 
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

© Kluwer Academic Publishers/Akadémiai Kiadó 2001

Authors and Affiliations

  • M. Pimpl
    • 1
  • R. H. Higgy
    • 2
  1. 1.Central Safety DepartmentForschungszentrum KarlsruheKarlsruheGermany
  2. 2.National Centre for Nuclear Safety and Radiation ControlAtomic Energy AuthorityNasr City, CairoEgypt

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