PJB-2019-938
Impact of municipal solid waste on accumulation of heavy metals in wheat
Zafar Iqbal Khan
Abstract
Municipal solid waste was considered to contain various toxic metals. The heavy metals accumulate in plants due to extensive use of municipal wastes in crops. The present work was conducted to demonstrate the influence of municipal solid waste treatments on uptake of metals by wheat crop. The seed of wheat variety (Galaxy-13) was sown. Four heavy metals Cd, Zn, Fe, and Co were analyzed by using Atomic Absorption Spectrophotometer. The level of metals (mg/kg) in wheat grains varied from Cd (1.36-1.76), Fe (9.7-21.2), Zn (0.6-0.9) and Co (0.58-0.72). The value of the enrichment factor, pollution load index and bioconcentration factor of Cd were high. Geochemically Cd was the relatively movable element in soil ecosystems so it was easily taken up by plants. So, municipal solid waste must be treated properly before its application on agricultural land to prevent the excessive buildup of heavy metals in the wheat plant.
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