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Radiation Protection Dosimetry Advance Access originally published online on September 5, 2005
Radiation Protection Dosimetry 2006 118(3):352-359; doi:10.1093/rpd/nci339
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© The Author 2005. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Specific activity and hazards of Archeozoic-Cambrian rock samples collected from the Weibei area of Shaanxi, China

L. Xinwei1,2,*, W. Lingqing1, J. Xiaodan1, Y. Leipeng1 and D. Gelian3

1 College of Tourism and Environment, Shaanxi Normal University, Xi'an, Shaanxi 710062, People's Republic of China
2 State Key Laboratory for Mineral Deposits Research, Nanjing University, Nanjing, Jiangshu 210093, People's Republic of China
3 Department of Geology, Xi'an University of Science and Technology, Xi'an, Shaanxi 710054, People's Republic of China

* Corresponding author: luxinwei{at}snnu.edu.cn

Received June 21, 2005, amended August 4, 2005, accepted August 9, 2005

The present work deals with the radioactivity of the Archeozoic-Cambrian rocks of the Weibei area, Shaanxi, China. A total of 45 rock samples of Archeozoic-Cambrian strata were investigated. The radionuclides of the samples, in Bq kg–1, have been measured using Na(I)Tl gamma-ray spectrometer. The concentration of 226Ra, 232Th and 40K in the Archeozoic-Cambrian rock samples range from 12.3 to 55.4, from 2.4 to 98.7 and from 58.6 to 1613.3 Bq kg–1, respectively. The measured activity concentrations for these radionuclides were compared with the typical world average values. To assess the radiological hazard of the natural radioactivity in the samples, the radium equivalent activity, the external hazard index, internal hazard index and the annual gonadal dose equivalent associated with the radionuclides were calculated and compared with the international recommended values.


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