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Preliminary Characterization of a Post-Industrial Soil for Long-Term Remediation by Phytomanagement: Mesocosm Study of Its Phytotoxicity Before Field Application
International Journal of Environmental Research ( IF 2.6 ) Pub Date : 2020-01-01 , DOI: 10.1007/s41742-019-00241-5
Nour Hattab-Hambli , Manhattan Lebrun , Florie Miard , Lydie Le Forestier , Sylvain Bourgerie , Domenico Morabito

The present study focused on the characterization of a multi-contaminated former industrial site, followed by an investigation into the suitability of a possible phytoremediation technique. This study area located in Issoudun (France) was contaminated with high concentrations of trace elements such as copper (Cu), lead (Pb), zinc (Zn), and arsenic (As). The site was divided into 18 blocks, and soil samples (46 samples taken from the 18 blocks) were analyzed for pH, total organic matter (TOC), electrical conductivity (EC), total concentrations in Cu, Pb, Zn and As and granulometry. In a mesocosm experiment soil pore waters (SPWs) were collected from potted soil using rhizon samplers, at both the beginning (T0) and the end of the experiment (TF), with pH, EC and dissolved organic carbon (DOC) being determined directly from the SPW solutions. Cu, Pb, Zn and As concentrations in SPW as well as aboveground and belowground organs of Phaseolus vulgaris were also analyzed. The two main results are shown in this study. Firstly, the physico-chemical properties of the soil revealed the heterogeneity of the area, in particular for blocks 1, 2, 17 and 18. Secondly, the mesocosm phytotoxicity test using Phaseolus vulgaris showed that metal(loid)s plant accumulation depended not only on the soil metal(loid) concentrations, but also on soil pH and sand content. Moreover, Phaseolus vulgaris plants presented a homogeneous growth indicating that the area was able to sustain plant growth. These results revealed that a phytoremediation technique could be applied in this contaminated site.

中文翻译:

通过植物管理进行长期修复的后工业土壤的初步表征:田间应用前对其植物毒性的中观研究

本研究的重点是对受多种污染的前工业场地进行表征,然后调查可能的植物修复技术的适用性。该研究区位于伊苏敦(法国),被高浓度的微量元素污染,例如铜 (Cu)、铅 (Pb)、锌 (Zn) 和砷 (As)。该场地被划分为 18 个街区,并对土壤样品(从 18 个街区采集的 46 个样品)进行 pH 值、总有机质 (TOC)、电导率 (EC)、铜、铅、锌和砷的总浓度以及粒度分析. 在中观实验中,使用根茎采样器从盆栽土壤中收集土壤孔隙水 (SPW),在实验开始 (T0) 和实验结束 (TF),直接测定 pH、EC 和溶解有机碳 (DOC)来自 SPW 解决方案。铜、铅、还分析了菜豆 SPW 以及地上和地下器官中的 Zn 和 As 浓度。本研究显示了两个主要结果。首先,土壤的理化性质揭示了该地区的异质性,尤其是区块 1、2、17 和 18。其次,使用菜豆进行的中宇宙植物毒性试验表明,金属(类)植物的积累不仅取决于土壤金属(液体)浓度,以及土壤 pH 值和沙子含量。此外,菜豆植物呈现均匀生长,表明该区域能够维持植物生长。这些结果表明,植物修复技术可以应用于这个受污染的场地。本研究显示了两个主要结果。首先,土壤的理化性质揭示了该地区的异质性,尤其是区块 1、2、17 和 18。其次,使用菜豆进行的中宇宙植物毒性试验表明,金属(类)植物的积累不仅取决于土壤金属(液体)浓度,以及土壤 pH 值和沙子含量。此外,菜豆植物呈现均匀生长,表明该区域能够维持植物生长。这些结果表明,植物修复技术可以应用于这个受污染的场地。本研究显示了两个主要结果。首先,土壤的理化性质揭示了该地区的异质性,特别是对于区块 1、2、17 和 18。其次,使用菜豆进行的中宇宙植物毒性试验表明,金属(类)植物的积累不仅取决于土壤金属(液体)浓度,以及土壤 pH 值和沙子含量。此外,菜豆植物呈现均匀生长,表明该区域能够维持植物生长。这些结果表明,植物修复技术可以应用于这个受污染的场地。使用菜豆进行的中宇宙植物毒性试验表明,植物中金属(液)的积累不仅取决于土壤金属(液)浓度,还取决于土壤 pH 值和沙子含量。此外,菜豆植物呈现均匀生长,表明该区域能够维持植物生长。这些结果表明,植物修复技术可以应用于这个受污染的场地。使用菜豆进行的中宇宙植物毒性试验表明,植物中金属(液)的积累不仅取决于土壤金属(液)浓度,还取决于土壤 pH 值和沙子含量。此外,菜豆植物呈现均匀生长,表明该区域能够维持植物生长。这些结果表明,植物修复技术可以应用于这个受污染的场地。
更新日期:2020-01-01
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