The Prevalence of Heavy Metals (Arsenic) in Soils around Kuala Lumpur City, Malaysia
Tapash Rudra, Sara Mohamed Basher

Introduction
Heavy metals are among the principal contaminants in the environment. Beside the natural activities, almost all human activities also have potential contribution to produce heavy metals as side effects. Migration of these contaminants into non-contaminated areas as dust or particulates through the soil and spreading of heavy metals containing sewage sludge are a few examples of events contributing towards contamination of the ecosystems (1). Several methods are already being used to clean up the environment from these kinds of contaminants, but most of them are costly and far away from their optimum performance. The chemical technologies generate large volumetric sludge and increase the costs (2); chemical and thermal methods are both technically difficult and expensive that all of these methods can also degrade the valuable component of soils (3). Conventionally, remediation of heavy-metal-contaminated soils involves either onsite management or excavation and subsequent disposal to a landfill site.

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