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Journal of Radioanalytical Chemistry

, Volume 45, Issue 2, pp 445–451 | Cite as

Determination of U and Ra in rock samples by gamma-spectrometric method

  • A. Chouak
  • P. Vuister
  • G. Paic
  • M. Berrada
  • J. Csikai
Physical Methods Section

Abstract

A gamma-spectrometric method independent of radon escape for the determination of U and Ra in rock samples based on the 63 keV and 1001 keV as well as 185 keV lines is described and discussed. A simple experimental procedure is given for the determination of the self-absorption factor. The method has been applied for the determination of uranium and radium in rock samples from Morocco containing uranium between 17.5 wt.% and 0.026 wt.%. The limits of determination, at 95% confidence level and 10% standard deviation, for the 63 keV and 1001 keV lines were found to be 0.075 wt.% and 0.62 wt.%, respectively, using samples of 6 g and chosing 1 h measuring time.

Keywords

Uranium Radon Rock Sample Linear Calibration Curve Arkose 
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 1978

Authors and Affiliations

  • A. Chouak
    • 1
  • P. Vuister
    • 1
  • G. Paic
    • 1
  • M. Berrada
    • 1
  • J. Csikai
    • 1
  1. 1.Laboratory of Nuclear Physics, Faculty of SciencesUniversity Mohamed V.Rabat(Morocco)

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