Research Article | OPEN ACCESS
Determination of Absorbed and Annual Effective Doses around Birnin Gwari Artisanal Goldmine, Kaduna State, Nigeria
1Y.I. Zakari, 1R. Nasiru and 2M.A. Abdullahi
1Department of Physics Ahmadu Bello University Zaria, Nigeria
2Department of Applied Science, College of Science and Technology, Kaduna Polytechnic, Kaduna, Nigeria
Research Journal of Environmental and Earth Sciences 2013 5:252-255
Received: January 16, 2013 | Accepted: February 07, 2013 | Published: May 20, 2013
Abstract
This study presents result of outdoor absorbed dose rate and estimated annual effective dose rate from the naturally occurring radionuclides 238U, 232Th and 40K around BirninGwari artisanal goldmine using Instrumental Neutron Activation Analysis (INAA). The results showed that the mean absorbed dose rate is 96.52 nGy/h with a standard deviation of 33.3 nGy/h and the standard error of 9.62 nGy/h the range falls between 26.67-123.85 nGy/h. The mean effective dose rate was estimated to be 0.675 mSv/year with a standard deviation of 0.234 mSv and standard error of 0.068 mSv and in range between 0.183-0.867 mSv. The mean annual effective dose rate from this work is lower than the 1mSv/year recommended by ICRP for public radiation exposure control.
Keywords:
Absorbed dose rate, effective dose rate, neutron activation analysis, radionuclides,
Competing interests
The authors have no competing interests.
Open Access Policy
This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
Copyright
The authors have no competing interests.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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