EAS Publisher | Seasonal Variation of Physico-Chemical Parameters and Heavy Metals in Water Samples From Gold Mine Reservoir, Osun State, Nigeria

Seasonal Variation of Physico-Chemical Parameters and Heavy Metals in Water Samples From Gold Mine Reservoir, Osun State, Nigeria

DOI : https://doi.org/10.36349/EASJEHL.2020.v03i03.007

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Concentrations of some heavy metals (Fe,Pb,Zn,Cd,Cu and Ni) and physicochemical parameters were determined in water of Igun gold mine reservoir both in wet and dry seasons. Concentrations of heavy metals in the sediment were also evaluated. The concentration of the six heavy metals in water did not differ between seasons likewise the physicochemical parameters such as total dissolved solid, total hardness, sulphate, nitrate, temperature and oxygen but pH and alkalinity had seasonal variation (P=0.05). Heavy metal concentrations were found to be higher in sediment than in water and their concentrations also were in decreasing order of Fe>Pb>Zn>Cu>Cd>Ni in the sediment. All physicochemical parameters examined in the reservoir water were within permissible limit while concentrations of Cd, Fe, Pb and Ni exceeded the maximum allowable limit set by World Health Organization. Hence the water is considered unsuitable for domestic use and aquaculture purposes.

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