School of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran.
Department of Earth Sciences, Shiraz University, Shiraz, Iran.
Int J Phytoremediation. 2021;23(13):1402-1411. doi: 10.1080/15226514.2021.1900064. Epub 2021 Mar 24.
This study investigates the level of toxic trace elements (TTE) in the rhizosphere soil and tissues of five native plants and their phytoextraction/phytostabilization potential growing in Maharlu Lake wetland, in Southern Iran. The study anticipated by determination of 11 potentially TTE concentrations (As, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Pb, and Zn) in the soil, soil extract, and the plants' dry matter (root and shoot). Pollution index (PI), pollution load index (PLI), bioconcentration factor (BCF), bioaccumulation coefficient (BAC), and translocation factor (TF) were applied in the study. Two main results were pointed out in this study. Firstly, the result of pollution indexing and total and phyto-availability concentrations of TTE showed that some of them in the rhizosphere soil are problematic in the Maharlu wetland, in particular for Mo, Pb, Zn, and As. Secondly, the result of the correlation coefficients and phytoremediation indexing revealed that TTE accumulation in the plant tissues, not only depends on the concentration in the soil extract but is also plant-specific. Moreover, the results suggested that . has the potential for phytoextraction of Cd and Mo in the contaminated wetlands. This manuscript addresses the toxic trace elements concentration in rhizosphere soil and tissues of five native plants and their phytoextraction/phytostabilization potential: Maharlu wetland in southern Iran.
本研究调查了伊朗南部 Maharlu 湿地五种本地植物根际土壤和组织中有毒痕量元素 (TTE) 的水平及其在植物提取/固定中的潜力。通过测定土壤、土壤浸提液和植物干物质（根和茎）中 11 种潜在 TTE 浓度（As、Cd、Co、Cr、Cu、Fe、Mn、Mo、Ni、Pb 和 Zn），本研究预期会得出结果。研究中应用了污染指数 (PI)、污染负荷指数 (PLI)、生物浓缩系数 (BCF)、生物积累系数 (BAC) 和迁移因子 (TF)。本研究指出了两个主要结果。首先，污染指标和 TTE 的总量及植物可利用浓度的结果表明，Maharlu 湿地的一些根际土壤中存在问题，特别是 Mo、Pb、Zn 和 As。其次，相关系数和植物修复指标的结果表明，植物组织中 TTE 的积累不仅取决于土壤浸提液中的浓度，还与植物种类有关。此外，结果表明， 在受污染湿地中具有提取 Cd 和 Mo 的潜力。本文研究了伊朗南部 Maharlu 湿地五种本地植物根际土壤和组织中有毒痕量元素的浓度及其植物提取/固定潜力。
