Abstract
Heavy metals are contaminated that poses great environmental burden as they are hazardous to human, animal, plant health and the environment at large. In this study, Catharanthus roseus herbaceous ornamental plant was used for the phytoremediation of lead, nickel, zinc and chromium. Sample of soil was collected and analyzed for certain pollutants Pb, Ni, Zn and Cr. Also evidence of accumulation of these metals in the various plant parts studied was established using the Atomic Absorption Spectrophotometer (AAS). From the results, it was clear that the root of Catharanthus roseus were found to contain higher concentration of Pb, Ni, and Cr than the stem. After 60 days of experiment, the concentration of heavy metals in soil sample in decreasing order was found to be as Pb>Cr>Zn>Ni respectively where as the accumulation of heavy metals in plant parts include Pb>Cr>Zn>Ni. Finally, this study shows that the plant species was good accumulator of these heavy metals. Keywords: Heavy metals, contaminated soil, Accumulation, Catharanthus roseus
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