Of these aquatic plants, the emergent plants are able to accumulate metals in their tissues several
times than their surrounding environment, which might be due to
the metal uptake by plant tissues is by adsorption to anionic sites
in the cell walls (Sheoran and Sheoran, 2006).Phragmites australis
andTypha latifoliaare well known hyperaccumulator emergent
plants. They are capable to accumulate metals copper, cadmium,
chromium, nickel and lead up to 0.1% and iron and zinc up to 1% of
the plant dry weight (Kalra, 1998; Sasmaz et al., 2008