Tariwari C.N Angaye
The spatial and seasonal bioavailability of some heavy metals associated with vegetation of Municipal Solid Waste (MSWs) was evaluated in 7 stations, including control. Results on bioaccumulated cadmium were 0.001-0.093 and 0.001-0.083 mg/kg in dry and wet seasons respectively. In the same manner, other bioavailable heavy metals were: Chromium (0.001-0.055 and 0.001-0.032 mg/kg), Copper (0.001-3.991 and 0.001-3.013 mg/kg), Iron (43.97-164.20 and 37.45-117.34 mg/kg), Lead (1.81-5.51 and 0.001-5.07 mg/kg), and Nickel ranging from 0.001-0.38 and 0.001-0.168 mg/kg in dry and wet seasons respectively. While values of the control station were relatively lower in both season, the order of bioavailable heavy metals was; Iron>Copper>Lead>Chromium>Nickel. The results indicated that the dumpsites have a trace amount of leachable heavy metals due to anthropogenic activities associated with MSWs.
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