摘要
以贵州废弃DW铅锌矿区27种优势植物为研究对象,利用原子吸收、原子荧光测定植物体内Zn、Cr、Pb的含量,研究了矿区植物中的Zn、Cr、Pb的含量积累特征及植物对它们富集能力。结果表明,大多数植物中的重金属积累量由大到小的顺序为Zn、Pb、Cr,但富集系数由大到小的顺序为Cr、Zn、Pb。受矿区环境及Zn适应的影响,植物对Zn富集系数较小,Zn在百合科萱草中的积累量为1 650.27 mg/kg;地笋对Cr的富集系数为0.591,可作土壤重金属Cr污染修复植物;所研究的植物均不适合作重金属Pb的土壤环境修复植物。
This article selected 27 kinds of plants which growed well in the abandoned DW lead-zinc mine of Guizhou province as the research objects. The contents of heavy metals （Zn,Cr,Pb） were analyzed by AAS and AFS. Using concentra- tion factors method and Cluster Analysis method, accumulation and enrichment capabilities of Zn,Cr,Pb were studied in the plants. The results showed that the accumulation amounts of heavy metals in most of the same species were Zn〉Pb〉Cr, but enrichment capability was Cr〉Zn〉Pb. The accumulation amount of Zn was small and affected by the environment of mining area and Zn adaption. The accumulation amount of Zn in Hemerocallis was 1 650.27 mg/kg. The concentration factor of Cr in Ground shoots was 0.591, so it can be used to repair Cr pollution in soil; all plants were not suitable to repair the soil which was polluted by Pb.
出处
《湖北农业科学》
2015年第10期2363-2366,2371,共5页
Hubei Agricultural Sciences
基金
贵州省社会发展攻关项目(黔科合SY(2010)3013号)
贵州省自然科学基金项目(黔科合J字[2010]2031号)
关键词
铅锌矿区
优势植物
重金属
富集
lead-zinc mining area
dominant plants
heavy metals
enrichment
