Environmental Impact Assessment of Oluyole Industrial Estate Activities on River Ona Water, Ibadan, Nigeria: Implications to Human Health Risk.
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Date
2024
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Abstract
Environmental impact assessment of Oluyole Industrial Estate activities on river Ona water at Ibadan and its relation to human health risk have been investigated using carcinogenic and non-carcinogenic health parameters. Flame-photometry-technique was used to analysis some of the toxic metals from the water samples taken from the study area. Results shown that Fe, Mn, Ni, Pb and Cd had concentrations higher than WHO standard and their CF are >1 with very high Deg.C. The adults’ Exping (for Copper, Iron, Manganese, Nickel, Lead and Zinc) computed are >1 while < 1 for all other metals in children except for Co and Cd respectively. The Hazard Quotient calculated for Pb in adults are >1 and the corresponding Hazard Index are generally >1 (that is, of high chronic risk). The HQ of Fe, Mn, Ni and Pb calculated for children are generally >1 in the industrial areas compared to the upstream (except Pb that also has values >1) which are less than 1. The HI are >1 which also depicts high chronic risk. The CDII is >1. CRing values are greater than prescribed limits of 10-4 and 10-6 respectively. As the cause of elemental elevations for Fe, Mn, Ni, Pb and Cd in the water is being controlled mainly by the effluents being discharged by the industries, the rock weathering processes also controlled Cr, Cu, Zn and Cu in the water has illustrated by the value of CF. Hence, the water is both non-carcinogenic and carcinogenic toxic risks to human health.
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Keywords
Oluyole, River Ona, non-carcinogenic and carcinogenic risks, contamination factor, degree of contamination