ORIGINAL ARTICLE
Year : 2016 | Volume
: 39 | Issue : 4 | Page : 222--232
Radiological assessment and geochemical characterization of the sediments of Awba Dam, University of Ibadan, Nigeria
Nnamdi Norbert Jibiri, Idowu Richard Akomolafe
Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan, Nigeria
Correspondence Address:
Nnamdi Norbert Jibiri
Department of Physics, Radiation and Health Physics Research Laboratory, University of Ibadan, Ibadan
Nigeria
The distribution of natural radionuclides and geochemical parameters in the sediments of Awba Dam, University of Ibadan, Nigeria has been determined. The mean absorbed dose rates obtained were 72.3 nGy/h (upstream), 53.9 nGy/h (middle stream) and 50.29 nGy/h (downstream) with the corresponding mean annual effective dose rates of 0.09, 0.07 and 0.06 mSv/year, respectively. The geochemical analysis showed that Si, Al, Fe, Mn, Mg, Ca, Na, K, and Ti were the major elements and Zn, Cu, Cr, Rb, Ni, Ba, Ga, Ce, and Sr as heavy metals in the sediments. The moderate enrichment elements were Zn, Rb, Ba and Ga, whereas elements deficient in enrichment were Cr, Sr, Ce, Cu, and Ni. The geo-accumulation index was from unpolluted to moderately polluted environment. The enrichment factors (EF) observed in the elements indicate that these metals are entirely from crustal material or natural origin while EF >1.5 observed in Zn, Rb, Ba, and Ga suggests that the sources are more likely to be anthropogenic. The values of the radiological hazard parameter indices were below the recommended safe limits; an indication that the sediments can be used safely.
How to cite this article:
Jibiri NN, Akomolafe IR. Radiological assessment and geochemical characterization of the sediments of Awba Dam, University of Ibadan, Nigeria.Radiat Prot Environ 2016;39:222-232
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How to cite this URL:
Jibiri NN, Akomolafe IR. Radiological assessment and geochemical characterization of the sediments of Awba Dam, University of Ibadan, Nigeria. Radiat Prot Environ [serial online] 2016 [cited 2023 Mar 31 ];39:222-232
Available from: https://www.rpe.org.in/article.asp?issn=0972-0464;year=2016;volume=39;issue=4;spage=222;epage=232;aulast=Jibiri;type=0 |
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