Islamic Azad University, Hamedan Branch, Hamedan, Iran.
Int J Phytoremediation. 2012 Sep;14(8):786-95. doi: 10.1080/15226514.2011.619594.
Contamination with heavy metals is one of the most pressing threats to water and soil resources, as well as human health. Phytoremediation might potentially be used to remediate metal-contaminated sites. A major advance in the development of phytoremediation for heavy metal affected soils was the discovery of heavy metal hyperaccumulation in plants. This study applied several established criteria to identify hyperaccumulator plants. A case study was conducted at a mining area in the Hamedan province in the west central region of Iran. The results indicated that plant metal accumulation differed among species and plant parts. Plant species grown in substrata with elevated metal levels contained significantly higher metal levels. Using the most common criteria, Euphorbia macroclada and Centaurea virgata can be classified as hyperaccumulators of specific heavy metals measured in this study and they might potentially be used for the phytoremediation of contaminated soils.
重金属污染是对水和土壤资源以及人类健康最紧迫的威胁之一。植物修复技术可能被用于修复受金属污染的场地。在受重金属影响的土壤的植物修复发展方面，一项重大进展是发现了植物对重金属的超积累。本研究应用了几种已确立的标准来识别超积累植物。在伊朗中西部哈马丹省的一个矿区进行了一项案例研究。结果表明，植物对金属的积累因物种和植物部位而异。在金属含量较高的基质中生长的植物物种，其金属含量明显更高。根据最常用的标准，大飞扬草和矢车菊可被归类为本次研究中测定的特定重金属的超积累植物，它们可能被用于污染土壤的植物修复。
