Abstract
Assessment of heavy metal levels of Agodi Reservoir in Ibadan, Nigeria
Highlights
The major stream entering Agodi Reservoir is Ogunpa River, which serves as a point source of pollution to the reservoir
Non-point sources of pollution to Agodi Reservoir are run-offs from Agodi Parks and gardens in the city, agricultural areas, construction sites, roads and streets, which are secondary grounds arising from environmental degrade
Eroded earth crust is a natural source of heavy metal that percolate into and sediment whereas humaninfluenced source heavy metal contamination could be from vehicular gas exhaust, laundry discharges, engine disposal and fertilizer use
Summary
Results showed no seasonal variations in all the heavy metals except for Co. there is no significant variation in heavy metal concentration between the test locations. Major environmental contaminations and impact result from anthropogenic activity such as mining and smelting, industrial production and use, domestic and agricultural use of metals and their compounds Environmental pollution can occur through metal corrosion, atmospheric deposition, soil erosion of metals ions and leaching of heavy metal (Goyer, 2001, He et al 2005). Natural phenomena such as weathering and volcanic eruptions have been implicated Shellariet al. The present work aimed to investigate the pollutants levels of some heavy metals (Cadmium, Cobalt, Chromium, Copper, Iron, Manganese, Nickel, Lead, and Zinc) in the water in Agodi Reservoir, in Ibadan and the safety levels of the water for human consumption
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