This study was conducted on the urban agricultural soils at the banks of three metropolitan and suburban rivers namely Challawa, Jakara and Watari in Kano, Kano State, Nigeria to determine the total, exchangeable and soluble concentrations of the heavy metals Cu, Cr, Ni, Zn, Pb and Cd. The soils are all slightly alkaline (mean pH 7.42-7.77), with moderate CEC (12.63-23.11cmol/kg), medium to high organic carbon (7.16-11.27g/kg).
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