In this study metal accumulation heavy metals accumulation in the tarry deposits on the leaves of tress growing along the busy road of Karachi city has been estimated. Samples of the tarry deposits on leaves were collected from various intersections on the busy roads of Karachi. In this study total average concentration of lead, copper, manganese, zinc nickel and cadmium were found in the range of 0.014-2.547, 0.026-1.8, 0.285-4.984, 0.472-7.173, 0.014-7.173, 0.014-0.265 and 0.002-0.027 mg/g respectively. The result shows that almost all the pollution is being generated by automobile exhaust in the urban areas of Karachi.
G H SHAIKH ,D R HASHMI ,S I SIDDQUI ,
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