STUDIES ON THE UPTAKE OF HEAVY METALS BY VARIOUS PLANT SPECIES ON CHROMITE MINESPOILS IN SUB-TROPICAL REGIONS OF INDIA

摘要

The presence of heavy metals (Cr, Ni and Fe) in soil and accumulated by herbs, shrubs and trees regencerated naturally on the minewaste-dumps of Sukinda chromite mines (TISCO sector) were investigated. There was signficant correlationship between Cr and Fe in the soil where a tree species (Caunaregam spinosa) occurred. Guazuma ulmifolia and Diospyros montana also did show signficant correlation beteen leaf, stem and soil for Cr, Ni and Fe. Among the shrubs (Calotropis gigantea, Chromoleana odorata, Phyllanthus reticulatus and Woodfordia fruticosa) signficant and positive correlations were obtained for Cr and Ni in soil and iron and nickel in leaf and chromium and nickel in stem.