Bioaccumulation and Translocation Factors of Lead in Mustard and Maize Plants in Soil Kurdistan Region _ Akre City

Abstract

The aim of this study is to determine the Pb bioaccumulation and translocation factors in mustard (Brassica juncea) and maize (Zea mays L). growing in the pot experiment in Akre horticulture nursery soil. In present paper, about 1gm of root and shoot portions of the selected plant species that were growing in the site were separately collected. Besides, 10gm of soil samples were also collected from the pots at each sampling where the plants were previously sampled. The soil and plants were analyzed for Pb by atomic absorption spectrophotometer (AASP), type GBC 932AA. Bioaccumulation factor (BAF) was measured in the plant species and obtained from the ratio of Pb content in the plant root to that of extracted Pb content in the soil. And, Translocation factor (TF) was obtained from the ratio of Pb content in the plant shoots to that in the plant roots, from the results obtained, the two plant species had BAF and TF>1, suggesting their applicability in extraction of Pb polluted soil at the study site. Since Pb accumulation and translocation, factors in the two plants species were more than one so they regard as accumulator plants and suggest that the plants species having phytoextraction ability and could be used in restoring soil contaminated with Pb.