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Radiation Protection Dosimetry Advance Access originally published online on June 26, 2007
Radiation Protection Dosimetry 2008 128(2):191-197; doi:10.1093/rpd/ncm333
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Assessment of the radiological hazards due to naturally occurring radionuclides in soil samples collected from the north western areas of Pakistan

S. Rahman1, Matiullah1,*, S. A. Mujahid2 and S. Hussain2

1 Pakistan Institute of Engineering and Applied Sciences (PIEAS), P.O.Nilore, Islamabad, Pakistan
2 Environmental Radiation Laboratory, Physics Division, PINSTECH, Nilore, Islamabad, Pakistan

* Corresponding author: matiullah{at}pieas.edu.pk; dr_matiullah{at}yahoo.com

Received April 9, 2007, amended May 22, 2007, accepted May 28, 2007

226Ra, 232Th and 40K were measured in soil samples, these were collected from different localities of the North West Frontier Province and Federally Administered Tribal Areas, Pakistan. In order to measure the specific activities in these samples P-type coaxial high purity germanium based gamma-ray spectrometer was used. Average values of the measured activities of 226Ra, 232Th and 40K were 26 ± 11, 39 ± 17 and 485 ± 177 Bq kg–1, respectively. Average radium equivalent activity was found to be 122 ± 42 Bq kg–1. External and internal hazard indices were also calculated and found to be 0.33 ± 0.12 and 0.40 ± 0.14, respectively. Average effective dose received due to gamma rays was 0.34 ± 0.12 mSv y–1. Measured natural radioactivity, hazard indices and effective doses received by the population were found within the recommended limits. The aim of this work was to make a baseline data of natural radioactive elements for the soil of the area and to assess it radiological significance if used as a building material for the construction of houses.


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