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.: Home > Nature and Science > 2012 > Volume 10 Number 5 > 1FAWEYA E.B and 2ONIYA E.O.

Radiological Safety Assessment And Physico-Chemical Characterization Of Soil Mixed With Mine Tailings Used As Building Materials From Oke-Kusa Mining Sites In Ijero, Nigeria.

1. Radiation and Health Physics Division, Dept of physics, Ekiti-State University, Ado-Ekiti, Nigeria. 2. Dept of Physics and Electronics, Adekunle Ajasin University, Akungba Akoko.
Abstract :

Soil samples potentially contaminated by mining by-products at Oke-kusa mines in Ijero, Nigeria were analyzed for naturally occurring radionuclides using gamma spectrometry. Also the physico-chemical determinations of parameters were based on standard methods of measurements. The highest average radioactivity levels obtained were 961 (Mica site), 37 (Kaolin site), 14 (columbite-tantalite site) for 40K, 226Ra and 232Th respectively. The average outdoor and indoor effective dose rates were far less than1 mSv y-1 recommended limit for the member of the public. The PH of columbite-tantalite and Kaolin are acidic while that of the remaining samples are slightly alkaline. Soils pollution assessment was carried out using enrichment factor and the geoaccumulation index. The results of geoaccumulation index and enrichment factor reveal that soils of Oke-Kusa mines are uncontaminated with Mn, Fe, and Cu and Zn and these metals are depleted.

Keywords :
gamma, radionuclides, soils, mines, geoaccumulation index, Enrichment factor Nigeria.

Date Deposited : 16 May 2016 20:21

Last Modified : 16 May 2016 20:21

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Volume 10, Number 5, - 2012 , ISSN 1545-0740

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