废弃铅锌矿区优势植物中镉、镍、铜含量及富集特征  

Content and Enrichment Characteristics of Cd,Ni and Cu in Dominant Plants in Abandoned Lead-zinc Mining Area

作　　者：吴迪[1] 邓琴[1] 耿丹[1] 杨秀珍[1] 秦樊鑫[1] 李存雄[1] 罗充[1] 

机构地区：[1]贵州师范大学 贵州省山地环境信息系统与生态环境保护实验室,贵州贵阳550001

出　　处：《贵州农业科学》2014年第3期191-195,共5页Guizhou Agricultural Sciences

基　　金：贵州省社会发展攻关项目"贵州典型铅锌矿区土壤重金属污染防治关键技术与修复示范"[黔科合SY(2010)3013];贵州省自然科学基金项目"贵州铅锌矿区土壤中重金属铅锌污染特征及铅锌富集植物筛选研究"[黔科合J字(2010)2031]

摘　　要：为了解废弃铅锌矿区镉、镍、铜在植物中的富集特征,以DW铅锌矿区长势较好的27种植物为研究对象,利用HNO3-HClO3体系消解植物样品,采用原子吸收(AA800)、原子荧光(AF-640)等仪器测定植物体中镉(Cd)、镍(Ni)、铜(Cu)的含量,并运用富集系数法和聚类分析法,对植物体系中重金属的含量进行分析。结果表明:大吴风草、苦蒿、米蒿对Cd、Ni、Cu有一定的富集能力,但Cd的富集系数较小,最大值仅为0.193,对Ni的富集系数分别为0.547、0.442、0.308,这3种植物可作为土壤中重金属Ni污染的修复植物;对Cu富集能力较强的有木贼科类节节草、菊科类橐吾、大吴风草、米蒿、百合科类萱草,富集系数分别为1.086、0.595、0.562、0.556、0.695,这5种植物均可以作为土壤环境中铜污染的修复植物。The Cd,Ni and Cu content in 27 dominant plants grown in DW abandoned lead-zinc mining area was determined by HNO3-HClO3 system,atomic absorption （AA800）,atomic fluorescence （AF-640） methods and the content of heavy metals in plants was analyzed by enrichment coefficient and clustering analysis methods to study the enrichment characteristics of Cd,Ni and Cu in plants grown the abandoned lead-zinc mining area. The results showed that The Cd enrichment coefficient of Lycopus lucidus , Conyzablinii and Artemisiadalai lamae was only 0.193（the maximum）but the Ni enrichment coefficient of Lycopus lucidus ,Conyzablinii and Artemisiadalai lamae was 0.547,0.442 and 0.308 respectively,which indicates that these plants can be used as the plants for repairing soil contaminated by Ni.The Cu enrichment coefficient of Equisetum ramosissimum ,Ligularia sibirica ,Lycopus lucidus ,Artemisiadalai lamae and Hemerocallis fulva was 1.086,0.595,0.562,0.556 and 0.695 separately,which shows five plants can be used as the plants for repairing soil contaminated by Cu.

关 键 词：铅锌矿废弃地 镉 镍 铜 优势植物 富集特征 

分 类 号：X173[环境科学与工程—环境科学]