Geoelectrical and Geochemical Investigations of Selected Dumpsites for Potential Groundwater Contamination in Gusau, Zamfara State, Nigeria
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Published:2022-02-01
Issue:1
Volume:6
Page:193-206
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ISSN:2616-0501
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Container-title:March 2022
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language:en
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Short-container-title:Nig. J. Env. Sci. & Tech.
Author:
Murana K.A.1, Shuaibu A.M.1, Ajibade I.I.1, Okoye I.F.1, Ojo O.F.2
Affiliation:
1. Federal University Gusau 2. Ekiti state University
Abstract
Groundwater contamination has been a worldwide phenomenon. In this research, geoelectric and geochemical surveys were carried out on three active dumpsites in Gusau metropolis for detection of groundwater contamination. Vertical electrical Soundings (VES) were conducted on the dumpsites using Schlumberger array with maximum current electrode separations of 180 m. Five VES were conducted on each dumpsite making a total of fifteen VES along three profiles. Thirty five (35) points were assessed from three wastes dumpsites using portable XRF equipment for the in-situ testing while fifteen (15) representative groundwater samples collected were taken to the laboratory for hydro-geochemical analysis. The field data obtained from VES was analyzed using WinGlink software. The VES results revealed three subsurface layers. The topsoil has resistivity ranging from 1.5Ωm to 48.2 Ωm while the thicknesses vary from 0.47 m to 3.37 m across the profiles. The second layer’s resistivity varies from 5.4 Ωm to 144.35 Ωm and their thicknesses’ ranges from 1.36 m to 16.93 m. The third geoelectric layer has resistivity from 70.0 Ωm to 6003.0 Ωm. The geoelectric results revealed that the top soils in all the dumpsites were characterized by very low resistivity depicting possible pollution and contamination. Environmental pollution models applied to the geochemical dataset revealed Zn, Pb and Cu as moderately contaminants which generally indicated severe potential contamination in the investigated area. While other analytic parameters such as Mn, Cr, Ni and Fe showed low contamination factors. Hydro chemical analysis showed that pH values recorded from the water samples ranged between 7.26 to 8.12 with mean value of 7.50, whereas, recorded Total dissolve solid (TDS) ranged between 377 to 1393mg/L with average concentration of 751.27mg/L. Findings from the study indicated that there may be possible contamination of shallow groundwater system in the nearest future if proper mitigation measures are not taken into consideration at the dumpsites.
Publisher
University of Benin - Faculty of Environmental Sciences
Subject
Management, Monitoring, Policy and Law,Geography, Planning and Development
Reference24 articles.
1. Abdullahi, N.K., Osazuwa, I.B. and Sule, P.O. (2011). Application of integrated geophysical techniques in the investigation of groundwater Contamination. A case study of municipal solid waste leachate.Ozean Journal of Applied Sciences,4(1), pp. 7-25. 2. Adeyemi, O., Oloyede, O.B. and Oladiji, A.T. (2007). Physicochemical and microbial characteristics of leachate- contaminated groundwater. Asian .J. Biochem, 2, pp. 343-348. 3. Akankpo, A.O. and Igboekwe, M.U. (2011). Monitoring Groundwater Contamination using Surface Electrical Resistivity and Geochemical Methods. Journal of Water Resource and Protection, 3, pp. 318-324. 4. Amadi, A.N., Olasehinde, P. I., Obaje, N.O., Unuevho, C.I., Yunusa, M.B., Keke, U.,et al. (2017). Investigating the Quality of Groundwater from Hand-dug Wells in Lapai, Niger State, North-central Nigeria using Physico-chemical and Bacteriological Parameters. Minna Journal of Geoscience, 1(1), pp. 77 – 92. 5. Boban, M., Dijana, D., Mirjans, N.V., Snezana, B.L. and Miroslav, V. (2016). Assessment of Ecological Risk of Heavy Metal Contamination in Coastal Municipalities of Monyenegro. International Journal of Environmental Researchand Public Health, 13, p 393.
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