Browsing by Author "Arise, R.O, Idowu, O.A, Farohunbi, S.T and Abubakar, F.A"
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Item Levels of Some Metals and earthworm Phosphate Activities in the Soil around Odo- efo River, Ilorin, Kwara State(Library and Publications Committee, University of Ilorin, 2015-10-30) Arise, R.O, Idowu, O.A, Farohunbi, S.T and Abubakar, F.ASoil pollution has increased in recent years thereby causing the accumulation of heavy metals. In this study, the level of some metals in soil collected from four different sites S1 (400-500m), S2 (300-250m), S) (15-75m) and S4 (10-25m) around Odo-Efo River that receives effluents from Global Soap and Detergents Industry located at Asa-Dam, Ilorin, Kwara State in north-central Nigeria and their effects on biomarker enzymes (alkaline phosphatase and acid phosphatase) in earthworms collected each site were investigated. They were compared to a control (Sc) soil sample from a forested area at the University of Ilorin Botanical Garden. The soil samples were assayed for Cd, Cu, Hg, and Pb by flame atomic absorption spectrophotometer after aqua ragia digestion. Results of the analysis revealed that metal concentration ranged as Cd (0.003-0.004 mg kg), (0.04-0.21 mg kg), Hg (0.001-0.003 mg/kg) and Pb (0.007-0.008 mg/kg) with Cd, Cu and Hg found to be significantly higher (p<0.05) in all sampling sites when compared to the control but with significant decrease (p<0.05) in the concentration of Pb when compared to the control. The increase in some metal concentrations was accompanied by a corresponding increase in the concentration of the earthworm biomarker enzymes and malonaldehyde concentration. The study that the effluent may contain some heavy metals with long-term effects on soil characteristics and the food chain. Keywords: Soil pollution, Heavy metals, Effluents, Earthworm, Biomarker enzyme, Food chainItem Levels of Some Metals and earthworm Phosphate Activities in the Soil around Odo- efo River, Ilorin, Kwara State(Library and Publications Committee, University of Ilorin, 2015-09-28) Arise, R.O, Idowu, O.A, Farohunbi, S.T and Abubakar, F.A