Concentrations of Pb, Cu, Cd, and Zn were measured in Soil samples in the study area. Averages of concentrations of Pb (55.54mg/kg), Cu (202.94mg/kg), Cd (35.47mg/kg) and Zn (51.83mg/kg) in the soil samples were compared with Canadian soil quality guidelines (CSQGs) of Canadian Council of Ministers of the Environment.(CCME), Federal Environmental Protection Agency (FEPA), Nigeria and standard of average shale. Contamination indices and ecological risk indices were analyzed to assess heavy metal contamination of agricultural soils using single and integrated indices. In this study, contamination factor (CF), ecological risk factor (Er) and index of geo-accumulation (Igeo), as single indices, and the pollution load index (PLI), the degree of contamination (Dc) and the potential ecological risk index (RI), as integrated indices, were calculated.
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