| 原文摘要 | Large quantities of potentially toxic elements (PTEs) and other chemicals are emitted from different industries and automobiles that result in contamination of environment, water-bodies and roadside soils.Increasing awareness of the threat that potentially toxic metals can cause to the environment and to humans is presently pressuring society to comply with environmental regulations and develop management strategies to minimize their adverse impacts.In Pakistan, majority of the industries discharge wastewater without any treatment and such wastewater is considered the main source of contaminants including several metals like Lead (Pb) Nickel (Ni) and Cadmium (Cd). Along roadside soils Zinc (Zn) is a major pollutant from tires. In order to protect the environment, roadside soils and human health, it is requisiteto rehabilitate and reintegrates soils degraded by PTE contamination. Different strategies to manage toxic elements such as the use of organic and inorganic amendments can have been employed to minimize the toxicity to the environment. Numerous modern remediation approaches have progressively focused recently to mitigate the increasing level of PTEs. One of the cost-effective and environmental friendly remediation approach is application of organic amendments such as biochar application (BC), compost and farmyard manures, to reduce the bioavailability and uptake of these PTEs. Plant residues/bark can also be used as cheap metal sorbent for the removal of metals from synthetic contaminated soils. The application of Phosphorus amendments such as rock phosphate, to contaminatedroadside soils can beefficiently used as a potentially efficient in situ remediation method. Exploration is assessment is needed to check the effect of these amendments on contaminated roadside soils.
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