ASSESSMENT OF LEAD, COPPER AND IRON LOAD IN AN ENVIRONMENT OF A METAL SMELTING PLANT BY THE CHEMICAL ANALYSIS OF Eucalyptus globulus IN BUKURU, NIGERIA

S. J. Salami, A. J. Oyere

Abstract


The leaf and bark samples of Eucalyptus globulus and soil samples within the vicinity of Makeri Smelting factory, Bukuru were analysed for their lead (Pb), copper (Cu) and Iron (Fe) contents. The results showed that Pb concentration    was in the range 6.30 - 18.5mg/g, 10.80 - 29.35mg/g and 3.30 - 4.60mg/g for the leaf, bark and soil samples respectively. Cu was in the range 11.00 - 57.80mg/g, 4.00 – 78.10mg/g and 7.00 – 9.5mg/g in the leaf, bark and soil samples respectively. Fe was in the range 34.30 - 128.35mg/g,153.00 - 330.10mg/g and 708.35 to 952.45mg/g in the leaf, bark and soil samples respectively. Metal concentrations were highest closest to the smelting factory making farming activities within the vicinity of the smelting plant unacceptable as crops harvested from such sites are very likely to be heavily contaminated with toxic heavy metals. The plant under study accumulated Pb and Cu to a greater extent than Fe in comparison with the levels in the soil. Eucalyptus globulus is a better indicator of Pb and Cu than Fe.

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