Determination of uranium and thorium using gamma spectrometry: a pilot study

This paper presents the results of a pilot experiment aimed at standardizing procedures for the CPqCTR/UESC Gamma Spectrometry Laboratory (LEG) for the quantification of natural radioactive elements in solid environmental samples. The concentrations of 238U, 232Th and 40K in two sediment matrix belo...

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Bibliographic Details
Published in:Journal of physics. Conference series 2018-03, Vol.975 (1), p.12035
Main Authors: Olivares, D M M, Koch, E S, Guevara, M V M, Velasco, F G
Format: Article
Language:English
Subjects:
Physics
Radioisotopes
Radium
Scientific imaging
Spectrometry
Spectroscopy
Thorium
Uranium
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Summary:This paper presents the results of a pilot experiment aimed at standardizing procedures for the CPqCTR/UESC Gamma Spectrometry Laboratory (LEG) for the quantification of natural radioactive elements in solid environmental samples. The concentrations of 238U, 232Th and 40K in two sediment matrix belonging to the Caetité region were determined, by using the absolute method with uncertainties about 5%. The results were obtained using gamma spectrometry with a high-resolution p-type HPGe detector. As a closure, the absorbed dose, radium equivalent activity and the annual effective dose were calculated.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/975/1/012035