organic pollutants , microbes and so on. Mobility of metals
is controlled by sorption process. The adverse effects of
mobility are , they contaminate ground water and ultimately
causes human health hazards. Their persistent in soil also
causes accumulation of heavy metals in food chain when
they reach the conducive environment which is suitable
for conversion of unavailable form into available form.
Hyper accumulator plants which may extract excess amount
of metals from soil ie. phyto remediation. Identification of
plants which can accumulate more quantity of heavy metals
in their tissues are the prime most important technique to
clean the contaminated soil environment.