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In developing countries, large amounts of wastes are dumped daily in open dumping sites without proper management. Hence, the aim of this study is to assess the trace element concentrations in soils as affected by active and abandoned dumpsites in Lagos with reference to possible environmental and health impacts. Twenty Nine elements were analyzed for in soil samples using Inductively Coupled Plasma Mass Spectrometry method at actlabs, Ontario Canada. Pb, Cd, Zn, Cr, Cu, As, Mo and Mn were hazardous for all the samples, Ag, Al, Co, Ni, Sb, Sc, Sr, Ti and V were hazardous for few samples while Bi and all major elements were not hazardous for all the samples.Based on Geoaccumulation Index the soil can be classified as moderately to extremely contaminated with Pb and Cd and practically uncontaminated to heavily contaminated with Zn, Cu, As and Mo. The results of contamination factor were 3.86 and 5.71 (As), 1.60 and 1.93 (Mo), 3.41 and 4.24 (Zn), 0.93 and 2.23 (Cu), 7.71 and 12.64 (Pb), 8.71 and 9.21(Cd) for abandoned and active sites respectively. The overall contamination degrees for both abandoned and active dumpsites were within very high and considerable degree of contamination respectively.

Potential soil contamination with toxic metals in the vicinity of active and abandoned dumpsites