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Abstract
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Article Information:
Levels of Radionuclide Contents in Stream Waters of Some Selected Rivers in Ogbomoso Land, South West Nigeria
J.O. Ajayi, O. Adedokun and B.B. Balogun
Corresponding Author: J.O. Ajayi
Submitted: June 23, 2012
Accepted: July 28, 2012
Published: September 20, 2012 |
Abstract:
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The study aims at providing a base-line data for the effective monitoring of unforeseeable radioactive
fall-out in the investigated areas. Attempts were made to investigate the radionuclide concentration levels from ten
selected streams spread around the five local governments of Ogbomoso land, South-Western Nigeria during
2010/2011 stream flow season. The stream water samples collected from these selected streams were then analyzed
using gamma spectrometry with sodium iodide (NaI) detector connected to a multi-channel analyzer. All the stream
water samples from these streams were found to contain permissible levels of radionuclides with mean activity
values of 100.13±26.82, 6.03±2.10 and 5.54±1.76 for 40K, 238U and 232Th, respectively. The mean absorbed dose rate
of the water samples was found to be 0.10 mSv/year which is very low when compared to the International
Commission on Radiological Protection’s (ICRP) recommended limit of 1 mSv/year and therefore pose no
radiological hazard to the public.
Key words: Gamma spectrometry, radionuclides, South western Nigeria, water streams, , ,
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Cite this Reference:
J.O. Ajayi, O. Adedokun and B.B. Balogun, . Levels of Radionuclide Contents in Stream Waters of Some Selected Rivers in Ogbomoso Land, South West Nigeria. Research Journal of Environmental and Earth Sciences, (09): 835-837.
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ISSN (Online): 2041-0492
ISSN (Print): 2041-0484 |
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