HydroGeochemical Analysis of Groundwater in Part of Igbo-Ora South Western Nigeria

Résumé

This study is aimed at analyzing the hydrogeochemistry of groundwater in part of igbo-ora, South Western, Nigeria. A total of 21 representative samples was collected from 20 hand dug wells and 1 borehole. In situ parameters like Ph, Electrical conductivity (Ec) were measured. Major cations and some anions were subsequently determined in the laboratory using AAS for metal analysis, spectrometric determination of chloride, UV- visible screening method for nitrate determination, vanado- molybdo phosphoric acid, colorimetric method of phosphate determination and turbidimetric determination of sulphate. The suitability of these water samples was evaluated by subjecting the results to statistical analysis. Statistical summary of geochemical data shows mean metal contents of chemical parameters determined to be Ec (997.5), Ph (10.605), Cd (0.0179), Pb(0.000991), Fe(0.0409), Zn(0.2149),Cr(0.097), Cu(0.1405), Mn(0.0829), Na(0.1912), Mg(2.0747), K(1.6306), Cl(18.08), Ni(1.7073), P043-(1.5438) and So42-(26.4241). The order of element with lower value are Cd<(Pb, Fe)<K<Mn<Cr<Cu<Mg<Zn<Na<P04<Ca<Ni<Cl< S04 and the order of element with highest value are Cd<Pb<Fe<Mn<Cr<Mg<Cu<Na<Zn<P04<K<Ni<Ca

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