Accumulation of lead and zinc by plants colonizing a metal mining area in Central Iran
Accumulation of lead and zinc by plants colonizing a metal mining area in Central Iran
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伊朗中部金属矿区植物对铅和锌的积累
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. Baker
中科院分区：
文献类型：
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作者：
S. M. Ghaderian;G. Hemmat;R. Reeves;A. Baker
Irankouh地区位于伊朗中部，是一个广阔的山区，有矿化土壤和几个活跃的锌和铅采矿和冶炼场所。在这项研究中，植物和土壤从5个不同的网站在这一地区进行了收集和分析的锌和铅。对不同地点土壤的分析表明，Zn和Pb的总含量分别高达23,000和18,000 μg g-1，交换态含量分别为30和20 μg-1，水溶性含量分别为1和0.6 μg-1。共采集到植物67种，隶属于29科66属。其中大部分是一年生草本植物，也在该地区的非金属土壤中发现。植物叶片干物质中Zn和Pb的含量变化较大，其中菊科紫罗兰和欧洲黄松的Zn和Pb含量分别高达4800 μg g-1和740 μg g-1。植物干物质中Zn、Pb含量与土壤中Zn、Pb含量呈显著正相关。Zn和Pb的浓度在大多数物种的叶子中收集显着高于其他植物从非金属土壤。在这一地区发现的一些积累植物可能具有通过植物提取净化土壤的潜力。
The Irankouh area, located in Central Iran, is a vast mountainous region with mineralized soils and several active zinc and lead mining and smelting sites. In this study plants and soils from 5 different sites in this area were collected and analyzed for Zn and Pb. Analysis of soils from different sites showed the expected high concentrations of Zn and Pb - up to 23,000 and 18,000 μg g -1 for total, 30 and 20 μg g -1 for exchangeable, 1 and 0.6 μg g -1 for water-soluble fractions, respectively. Plants collected from these sites total 67 species from 66 genera and 29 families. Most of these are annual herbs found also on non-metalliferous soils in this region. The concentrations of Zn and Pb in the leaf dry matter of plants were variable, with up to 4800 μg g -1 for Zn and 740 μg g -1 Pb in Matthiola chenopodiifolia and Pinus elderica , respectively. A significant positive correlation was detected between the concentrations of Zn and Pb in plant dry matter and those in soils. The concentrations of Zn and Pb in the leaves of most species collected were significantly higher than for other plants from non-metalliferous soils. Some accumulator plants found in this area could have potential for soil clean-up by phytoextraction.