In vitro bioaccumulation metabolic studies of heavy metals by water lettuce Pistia stratiotes Engl. (Araceae)

ABSTRACT In vitro experiments on bioaccumulation of heavy metals, chromium, copper, lead and zinc was conducted using water lettuce Pistia stratiotes Engl. (Araceae) with 5, 10 and 20 mg/ 100 ml concentration for each metals for a period of 20 days. The Scanning Electron Microscopy equipped with Energy Dispersive X-ray (SEM-EDX) results revealed the bioaccumulation of lead as high as 37.79% followed by chromium 8.63%, zinc 6.00% and copper 2.37%. There was a change in the pH of the medium, the bioaccumulation of metals were confirmed by FTIR analysis and a unique metabolic studies of heavy metal sorption have been predicted by GC-MS analysis. Keywords: Bioaccumulation, FT-IR, GC-MS, Heavy metals, Pistia stratiotes Engl., SEM-EDX REFERENCES Pergent C, Pergent-Martini C. Mercury levels and fluxes in Podosonia oceanic meadows. Environ. Pollut. 1999; 106: 33-37. Singh SP, Ghosh M. A review on phytoremediation of heavy metals and utilization of its by-products. 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