Potentially toxic elements in facultative metallophytes Biscutella laevigata and Silene vulgaris along the stream descending from the abandoned Raibl mine (Italy).

IF 3.4 4区 环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES
Guido Fellet, Mara Mauri, Marco Contin, Valentino Casolo, Laura Pilotto, Luca Marchiol
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Abstract

The Raibl mine, located on the Italian side of the Julian Alps, was Italy's most productive lead (Pb) and zinc (Zn) mine until operations ceased in 1991. The large volume of by-products generated several environmental problems. Potentially toxic elements (PTEs) migrated along the Rio del Lago/Slizza streams contaminating the banks. The metal tolerance of the facultative metallophytes Biscutella laevigata and Silene vulgaris has been assessed using the bioconcentration factor and translocation factor. In aboveground tissues of B. laevigata were detected 0.05-1.92 mg kg-1 of Cd, 0.21-234 mg kg-1 of Pb, 0.49-1587 mg kg-1 of Tl and 20.6-3391 mg kg-1 of Zn, and of S. vulgaris 0.01-1.60 mg kg-1 of Cd, 0.01-138 mg kg-1 of Pb, 0.01-578 mg kg-1 of Tl and 14.9-1590 mg kg-1 of Zn. Concerning the phytoremediation potential, both species have confirmed promising characteristics, but S. vulgaris should be preferred to B. laevigata for phytostabilization projects in substrates with low Tl concentrations. The high concentrations of PTEs found in the sediments of the Rio del Lago/Slizza and in the herbaceous plants collected from the watercourse banks raise concerns about the potential impact of these elements on the surrounding ecosystem.

意大利Raibl废弃矿山下游河流中兼性金属植物laevigata和Silene vulgaris的潜在有毒元素。
Raibl矿位于朱利安阿尔卑斯山的意大利一侧,是意大利产量最高的铅(Pb)和锌(Zn)矿,直到1991年停产。大量的副产品产生了一些环境问题。潜在有毒元素(pte)沿着里约热内卢del Lago/Slizza溪流迁移,污染了河岸。利用生物富集因子和转运因子评价了兼性金属植物laevigata和Silene vulgaris的金属耐受性。青松地上部Cd含量为0.05 ~ 1.92 mg kg-1, Pb含量为0.21 ~ 234 mg kg-1, Tl含量为0.49 ~ 1587 mg kg-1, Zn含量为20.6 ~ 3391 mg kg-1;青松地上部Cd含量为0.01 ~ 1.60 mg kg-1, Pb含量为0.01 ~ 138 mg kg-1, Tl含量为0.01 ~ 578 mg kg-1, Zn含量为14.9 ~ 1590 mg kg-1。就植物修复潜力而言,这两种植物都具有良好的特性,但在低Tl浓度的基质中进行植物稳定工程时,应优先选用S. vulgaris,而不是B. laevigata。在里约热内卢del Lago/Slizza的沉积物和从水道岸边收集的草本植物中发现的高浓度pte引起了人们对这些元素对周围生态系统的潜在影响的担忧。
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来源期刊
International Journal of Phytoremediation
International Journal of Phytoremediation 环境科学-环境科学
CiteScore
7.60
自引率
5.40%
发文量
145
审稿时长
3.4 months
期刊介绍: The International Journal of Phytoremediation (IJP) is the first journal devoted to the publication of laboratory and field research describing the use of plant systems to solve environmental problems by enabling the remediation of soil, water, and air quality and by restoring ecosystem services in managed landscapes. Traditional phytoremediation has largely focused on soil and groundwater clean-up of hazardous contaminants. Phytotechnology expands this umbrella to include many of the natural resource management challenges we face in cities, on farms, and other landscapes more integrated with daily public activities. Wetlands that treat wastewater, rain gardens that treat stormwater, poplar tree plantings that contain pollutants, urban tree canopies that treat air pollution, and specialized plants that treat decommissioned mine sites are just a few examples of phytotechnologies.
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