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S. Mashi, S. Yaro, P. Eyong (2005)
A survey of trends related to the contamination of street dust by heavy metals in Gwagwalada, NigeriaManagement of Environmental Quality: An International Journal, 16
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Purpose – This paper seeks to examine the concentration of selected heavy metals (Cr, Pb, Cd, and Ni) in oil‐polluted soils of two communities in Warri, Delta state, Nigeria. Design/methodology/approach – Soil auger samples were collected at a depth of 0‐15 cm from four sites. Two soil samples were collected from two sites observed to have had oil spills and also two samples from two sites without oil spillage. The soil samples were analysed using the UNICAM 969 Atomic Absorption Spectrophotometer to determine the level of concentration of the heavy metals in these sites. Their levels in the oil‐spilled sites are compared with those of the control sites and also with the European community standards. Findings – The results obtained from this study reveal that the concentration of the heavy metals considered were higher in the oil‐spilled sites relative to the control sites. Similarly, when compared with the European community standards, the concentration is said to be quite significant. Practical implications – The results indicate that the operations of the oil industry in the study area have not been sufficiently accompanied by adequate environmental protection. To safeguard agricultural land in the area and hence human health, there is an urgent need for government to address the incidence of oil spills in this area. Originality/value – This paper provides information on the contribution of the oil industry in heavy metals contamination in the Niger‐Delta area of Nigeria.
Management of Environmental Quality An International Journal – Emerald Publishing
Published: Mar 1, 2006
Keywords: Heavy metals; Oil pollution; Nigeria
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