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Asian Journal of Applied Sciences
Year: 2019  |  Volume: 12  |  Issue: 3  |  Page No.: 123 - 127

Analysis of the Sources and Pattern of Heavy Metal Concentration in Urban Road Dust, Lagos State, Nigeria

Fatai Ogundele, I. Adeshina, Chidinma Jeremiah and Labaran Abalaka    

Abstract: Background and Objective: Urban road dust constitutes a serious environmental hazard. In spite of its adverse effect on biotic lives, only few studies have been carried out to compare metal concentration in urban road dust along Trunk A (Federal) and Trunk B (State) roads. This study examined sources and pattern of heavy metals contaminations in urban road dusts along federal and state roads in Lagos Metropolis. Materials and Methods: Dust from 6 federal roads and 6 state roads were collected using a dustpan and taken to the laboratory for analysis of Cd, Cr, Cu, Fe, Ni, Pb and Zn using Atomic Absorption Spectrophotometer (AAS) technique. Results: Results showed positive and significant associations between Cu and Fe and between Zn and Cu in federal road dust, while in state road dust, positive and significant association existed between Cu and Pb. Result of PCA identified Cu, Fe, Cd, Zn, Pb and Cr as principal heavy metals with high levels of pollution in road dust along federal road, while on state road dust, Pb, Cu, Zn and Fe had high levels of pollution. Conclusion: The extracted components identified anthropogenic activities as the major source of metal pollution in the studied road dusts.

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