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2012 (Vol. 4, Issue: 03)
Article Information:

Distribution and Chemical Speciation of Some Elements in the Ground Waters of Oban Area (South-Eastern Nigeria)

A.S. Ekwere and A. Edet
Corresponding Author:  AZUBUIKE EKWERE 

Key words:  Groundwater, Nigeria, Oban, speciation, saturation index, toxic elements,
Vol. 4 , (03): 207-214
Submitted Accepted Published
2011 June, 09 2011 August, 08 2012 March, 01
Abstract:

The computer modeling programs, PHREEQC and VISUAL MINTEQ were used to ascertain the distribution, chemical speciation and mineral saturation indices of groundwater in the Oban massif (South- Eastern Nigeria). The prime objective was to determine the potential risk of groundwater by potentially toxic Elements. Results reveals Fe, Mn, Ni, Pb, Cd and Cr are distributed as free ions. Oxides and hydroxides of iron and manganese are predominant, reflective of mineralogy/geology of the crystalline basement. The groundwater is super-saturated (SI>10), with respect to goethite, hematite, ferrihydrite, jarosite-k, hausmanite, manganite, pyrochroite and pyrolusite. These species are relatively mobile under the prevailing pH-Eh regime, but total concentrations are low and within permissible limits for safe water.
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  Cite this Reference:
A.S. Ekwere and A. Edet, 2012. Distribution and Chemical Speciation of Some Elements in the Ground Waters of Oban Area (South-Eastern Nigeria).  Research Journal of Environmental and Earth Sciences, 4(03): 207-214.
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