Spatial Effect of Rusty Roof on Water Quality in Otukpo

The Spatial Effect of Rusty Roof on Water Quality in Otukpo Local Government Area of Benue State, Nigeria

Runoffs from metal roof sheets (aged and New) in Otukpo LGA of Benue State, to carter in Nigeria were analyzed to determine the level of heavy metals (Cd, Cu, Fe, Mn, Ni, Pb, and Zn).

All the runoff samples though varying in time and space contain heavy metals concentrations. The results ranged from 0.003-0.009, μg/L, 0.165-0.291μg/L, 2.000-2.987 μg/L, 0.091-0.199 μg/L, 0.101-0.187 μg/L, 0.011-0.035 μg/L and 2.733-3.892 μg/L for Cd, Cu, Fe, Mn, Ni, Pb, and Zn in aged roof metal sheets, while in the new roof metal sheets, the values are 0.002-0.008 μg/L, 0.071-0.191 μg/L, 1.010-1.994 μg/L, 0.073-0.995 μg/L, 0.076-0.111 μg/L, 0.012-0.036 μg/L, and 1.875-2.941 μg/L respectively.

There were significant difference (P<0.05) between run off from aged and new roof metal sheets. The mean concentration of Fe, Cu, Ni and Zn of aged metal roof sheet were higher than the mean concentration of new metal roof sheets. All the metals determined except Fe have mean concentration lower than the recommended standard by WHO, CPA and FAO. The variations in mean concentration between aged and new metal roof sheets in this study, suggest anthropogenic inputs of these metals.

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