矿区与非矿区土壤重金属在艾蒿中的富集研究  

Study on Enrichment of Heavy Metal in Mugwort in Soil in Mining and Non-mining Area

作　　者：方改霞[1] 单林娜[1] 谭洪志[1] 刘辉丽 吴少杰[1] 

机构地区：[1]河南城建学院生物工程系,河南平顶山467044 [2]河南省平顶山市自来水公司,河南平顶山467000

出　　处：《安徽农业科学》2009年第5期2157-2158,共2页Journal of Anhui Agricultural Sciences

摘　　要：[目的]揭示土壤-植物体系中重金属的关系,探明植物根、茎、叶对一些重金属的富集迁移能力。[方法]以平顶山一矿煤矸石山和白龟山水库附近的土壤和多年生野艾蒿为试材,采用火焰原子吸收法测定了平顶山矿区与非矿区土壤中Cu、Zn、Mn、Pb和Cr的含量以及这些金属在植物艾蒿根、茎、叶中的含量。[结果]除Cu、Cr外,矿区土壤和非矿区土壤均受到不同程度的污染。艾蒿根、茎、叶对这几种金属的富集能力和转运能力的分析表明,它们在该植物体的富集系数为:Cr>Cu>Pb>Zn>Mn,在根、茎、叶富集情况为:茎>叶>根。对重金属转运能力为茎大于叶,其中对Mn的转运能力最强。[结论]艾蒿可用于对矿区重金属污染土壤的修复。[ Objective ] The study aimed to reveal the relationship among the heavy metal in soil-plant system and proved up the enrichment moving ability of plant root, stem and leaf to some heavy metal. [Method] With the soil and the wild mugwort in mine-coal waste rock hill in Pingdingshan and nearby the Baiguishan Reservoir as tested materials, the contents of Cu, Zn, Mn, Pb and Cr in the soil from Pingdingshan mining area and non-mining area as well as those contents of the metal in the mngwort roots, stems and leaves were determined by using the flame atomic absorption spectrometry. [Result] Both the mining soil and the non-mining soil were polluted, except of Cu and Cr. The analysis on the enrichment capacity and transfer capacity of the mugwort root, the stem and the leaf to these metals showed that their enrichment coefficient in the plant body in order was： Cr〉 Cu〉 Pb〉 Zn〉 Mn and that in root, the stem and the leaf in order was： stem〉 leaf〉 root. The transfer capacity of.the stem to heavy metal was greater than that in the leaf and that to Mn was strongest. [Conclusion] The mugwort could be used in the mining area for restoring the heavy metal polluted soil in mining area.

关 键 词：重金属 艾蒿 原子吸收光谱 富集系数 转运系数 植物修复 

分 类 号：X173[环境科学与工程—环境科学]