Ethiopian Institute of Water Resources, Addis Ababa University, P.O. Box: 150461, Addis Ababa, Ethiopia.
Addis Ababa Institute of Technology, Addis Ababa University, Addis Ababa, Ethiopia.
Environ Sci Pollut Res Int. 2023 Apr;30(19):55615-55624. doi: 10.1007/s11356-023-26349-y. Epub 2023 Mar 10.
Native plant species growing on metal contaminated soil at the foot of the Legadembi tailings dam were selected to evaluate their phytoremediation potential. For this purpose, soil, aboveground tissues, and roots of plant samples were analyzed for the concentrations of Zn, Cu, Ni, Pb, and Cd. The bioaccumulation and transfer of metals were evaluated in terms of translocation factor (TF), bioconcentration factor (BCF), and biological accumulation coefficient (BAC). The results showed that most of the species were efficient to take up and translocate more than one trace element (TE) from roots to shoots. Argemone mexicana L., Rumex nepalensis Spreng., Cyperus alopecuroides Rottb., and Schoenoplectu sconfusus (N.E.Br.) Lye showed potential for phytoextraction of Cu, while R. nepalensis and C. alopecuroides can accumulate in their above-ground parts and are suitable for phytoextraction of Ni. Rumex nepalensis, C. alopecuroides, and Typha latifolia L. have the ability for phytostabilization of Zn metal. Findings suggest concentrations of some metals in plants' tissue showed above the normal range which suggests their potential use in phytoremediation.
选择生长在莱加丹比尾矿坝脚下受金属污染土壤上的本地植物物种，以评估它们的植物修复潜力。为此，分析了植物样品的土壤、地上组织和根系中 Zn、Cu、Ni、Pb 和 Cd 的浓度。根据迁移因子（TF）、生物浓缩因子（BCF）和生物积累系数（BAC）评估金属的生物积累和转移。结果表明，大多数物种能够从根部有效地吸收和转运一种以上的痕量元素（TE）到地上部分。墨西哥豚草、尼泊尔酸模、香附子和无齿泽苔草具有铜的植物提取潜力，而尼泊尔酸模和香附子可以在地上部分积累，适合镍的植物提取。尼泊尔酸模、香附子和芦苇具有稳定 Zn 金属的能力。研究结果表明，植物组织中一些金属的浓度高于正常范围，这表明它们在植物修复中的潜在用途。
