COMPARATIVE ANALYSIS OF THE EFFECTS OF INDUSTRIAL EFFLUENTS ON THE HEAVY METAL CONTENT OF PROFILE...

The chemical properties of the natural horizons of profile pits and top soils at varying distances from the effluent sludge and control site were assessed to determine the effects of industrial effluents on the soil resources of Challawa Industrial Area, Kano, Nigeria. Affected and unaffected samples were collected and examined using a high-powered Atomic Absorption Spectrophotometer. (Co), (Cd), (Zn), (Cr), (Pb), and (Cu) were typically low (0.21, 0.01, 0.31, 0.57, 0.39, and 0.03 correspondingly) in the unaffected area and dropped down the horizons, whereas (Cr) and (Fe) were high in the affected area (3.53 and 137.51 respectively). The impacted area had a higher Mn concentration than the unaffected area. Cr, (Pb), and (Cu) declined down the horizon and within profiles, in contrast to Mn and Fe, which increased down the horizons and profile pits. Cr has been identified as the most significant heavy metal pollutant in areas impacted by industrial effluent, and as the most significant pollutant emitted by tannery industries, monitoring bodies should focus their efforts on ensuring compliance by tannery industries by treating their effluents internally before discharge into the environment.

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