Investigating the Accumulation Pattern of Heavy Metals, Bioconcentration and Translocation Factors in different Parts of Salicornia spp.(Case Study in Rud Shur Mardadabad Karaj)

This study was conducted to find out the concentration of lead (Pb), mercury (Hg), cadmium (Cd), arsenic (As) and chromium (Cr) in different parts of Salicornia persica Akhani plants (roots, stems, leaves and seeds), grown in the Rud Shur Mardadabad, and to compare the pattern of accumulation of these heavy metals, and to understand the translocation and bio concentration factors of heavy metals in different parts of the plants. The patterns of accumulation of metals were Cr>Pb>Hg>Cd>As for roots, Cr>Pb>Cd>As>Hg for stems, Pb>Cr>As>Cd>Hg for leaves and Pb>As>Cr>Cd>Hg for seeds. The concentrations of all heavy metals studied in different parts of this plant were significantly less than these of water and soil profiles (0-30 & 30-60 cm. depth). It was considered that the concentration of the elements in above ground parts of plants, even at their high concentrations in the soil, were kept at low levels. The bioconcentration index of all heavy metals in various parts of Salicornia plants ranged from 0.1 to 0.29. It was found that this species of Salicornia had no significant accumulation capacity for heavy metals and did not appear to be a suitable species for phytoremediation. The Salicornia plant with a translocation index of 1.02 ± 0.287 showed a high ability to transfer lead from the root to above ground parts. The lowest translocation factor was related to mercury metal (0.38 ±0. 040).