期刊
APPLIED RADIATION AND ISOTOPES
卷 80, 期 -, 页码 1-6出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.apradiso.2013.05.008
关键词
Naturally occurring radioactive material; Gamma ray spectroscopy; Uranium; Sodium iodide scintillation detector
This article investigates the prospect of utilising the 351.9 keV gamma-ray of Pb-214 when determining the concentration of uranium. Soil samples were collected from various locations around South Africa and laboratory gamma ray spectra for each were obtained by means of a NaI(Tl)-detector (7.62 x 7.62 cm(2)). The potassium, uranium and thorium concentrations where extracted by analysing gamma ray peaks that are associated with these radionuclides. Two separate uranium concentrations were extracted; one by means of the Pb-214 decay and the other one by means of the Bi-214 decay. These uranium concentrations were compared in terms of accuracies and detection limits. (C) 2013 Elsevier Ltd. All rights reserved.
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