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Year : 2011  |  Volume : 34  |  Issue : 4  |  Page : 270-274

Measurement of natural activities of 238 U, 232 th and 40 k in tin ore

Zagazig University, Faculty of Science, Physics Department, Zagazig, Egypt

Correspondence Address:
Nassif A Mansour
Zagazig University, Faculty of Science, Physics Department, Zagazig
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0972-0464.106200

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Tin ore is widely used in many industrial purposes. Such as tin ore contain natural radioactive nuclides at various concentrations. If this ore contain high concentrations of natural radioactive nuclides, workers handling them might be exposed to significant levels of radiation. Therefore it is important to determine the radioactive nuclides in this ore. The natural radionuclides ( 238 U, 232 Th and 40 K) and their daughter products contents of tin ore have been estimated in gamma-ray spectrometry and their levels using 70% Hyper-Pure` Germanium (HPGe) detector. The mean activities due to the three radionuclides ( 238 U, 232 Th and 40 K) were found to be 40 ± 3, 19 ± 2.2 and 97 ± 19 Bqkg−1 , respectively. The radium equivalent activity varied from 77.87 ± 11-12.03 ± .27 Bqkg−1 . The representative external hazard index values for the corresponding Tin Ore are also estimated. The results of this assessment obtained by the gamma-ray spectroscopic analysis, have indicated that the levels of natural radioactivity were lower than the international recommended limits.

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