DETERMINATION OF PHYSICOCHEMICAL AND HEAVY METAL CONTENT OF SOIL AROUND THE VICINITY OF SELECTED INDUSTRIES IN KADUNA METROPOLIS
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- NGN 3000
ABSTARCT
The soaring trend of environmental contamination by heavy metals is a global issue. The continual monitoring of soils around industrial areas becomes necessary. The present study focused on the physicochemical and heavy metal concentration in soil around the vicinity of selected industries in Kaduna metropolis. The mean pH, electrical conductivity, % organic matter, % sand, % clay and % silt obtained were 7.16±0.35, 362.60 ±10.7µS/cm, 2.92±0.50, 76.50±0.81, 17.79±5.51 and 6.13±1.65 respectively. The mean concentrations of the heavy metals investigated ranged between 26.89±0.36 – 77.18±0.40 µg/g for Pb, 29.25±0.7 – 44.20±0.35µg/g for Cr, ND – 1.5±0.02µg/g for Cd, 134.63±1.10 – 217.96±0.16 µg/g for Zn, 9.58±0.7–74.45±0.20µg/g for Cu, 92.14±0.20 – 200.8±0.31 µg/g for Mn and 1185.80±4.66 – 2488.00± 2.37 µg/g for Fe respectively. The highest concentration of Cr in the sampling areas was obtained at the vicinity of textile industry. The concentration of Fe was much higher than those of other elements. Cd was not detected in some of the soil samples. The concentrations of the metals were in the order Cd
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