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2012 (Vol. 4, Issue: 09)
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 

Key words:  Gamma spectrometry, radionuclides, South western Nigeria, water streams, , ,
Vol. 4 , (09): 835-837
Submitted Accepted Published
June 23, 2012 July 28, 2012 September 20, 2012

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.
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  Cite this Reference:
J.O. Ajayi, O. Adedokun and B.B. Balogun, 2012. Levels of Radionuclide Contents in Stream Waters of Some Selected Rivers in Ogbomoso Land, South West Nigeria.  Research Journal of Environmental and Earth Sciences, 4(09): 835-837.
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ISSN (Online):  2041-0492
ISSN (Print):   2041-0484
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