Abstract
Lead, zinc, cadmium, chromium, copper and nickel contents in waste dump and roadside sediments within Onitsha and environs were evaluated in the present study. Analysis of the magnitude of studied trace metals shows that their content in the waste dump were generally higher than those obtained from the roadside sediments. Analysis of the spatial distribution of trace metals in sediments around Onitsha shows that highest metal concentration of 0.19 mg/kg was found at the roadside near the dump site close to the Metallurgical Training Institute. High concentrations of metals in soils and waste dump sediments within the Onitsha metropolis are attributed to industrial and anthropogenic sources and are indicative of environmental pollution in Onitsha. It is therefore recommended that relevant authorities should step-up their waste treatment or disposal activities in order to minimize the hazards arising from indiscriminate dumping of wastes.
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