剑麻对铁矿尾矿库土壤修复的试验研究  

Research on Soil Remediation with Sisals in Iron Mine Tail Stock

作　　者：吴其珍[1] 杨安富[1] 

机构地区：[1]海南省环境科学研究院,海南海口570206

出　　处：《安徽农业科学》2009年第33期16490-16493,共4页Journal of Anhui Agricultural Sciences

摘　　要：[目的]评价尾矿库污染程度及剑麻对重金属污染的修复效果。[方法]通过野外调查和实验室分析对海南省昌江石碌铁矿尾矿库污染程度进行评价,并将2种剑麻品种H.11648和毛里求斯分别种于对照土壤与2个尾矿库土壤上,观察其对植株生长的影响。[结果]参照土壤污染国家2级标准和该地区土壤污染背景值,除Cr、Ni、Pb外,所有重金属均存在不同程度的污染,其中2个尾矿库Cd、Fe污染程度达到重度。种植剑麻后,各处理条件下,叶片吸收各重金属含量依次为Mn、Fe、Zn,其次为Pb、Ni和Cu、Co、Cr、As和Hg最低;根系中,以Fe、Mn、Zn含量较高,Cu、Pb、Ni含量其次,As、Cr、Co、Hg含量较低。[结论]H.11648修复污染土壤比毛里求斯更具有优势。[ Objective] The study aimed to evaluate the soil pollution degree of iron mine tail stock and the remediation effect of Sisals on heavy metal pollution. [ Method ] The soil pollution degree in Shilu Iron Mine Tail Stock in Changjiang City of Hainan Province was evaluated through field investigation and laboratory analysis and 2 Sisals varieties, H. 11648 and Mauritius, were planted in the soils of 2 mine tail stocks and CK soil to investigate their effects on the growth of Sisals plants. [ Result] Referred to the national secondary standards on soil pollution and the soil background values in the area, except Ca, Ni and Pb, all the heavy metal had pollution to different dedgree, in which, Cd and Fe pollution in 3 mine tail stocks reached heavy pollution. After planting Sisals, under different treatments, as for various heavy metal contents absorbed by leaves, Mn, Fe and Zn contents were highest, Pb and Ni contents were next and Cu,Co, Cr, As and Hg contents were lowest; as for that in roots, Fe, Mn and Zn contents were higher, Cu, Pb and Ni contents were next and As, Cr, Co and Hg contents were lower. [ Conclusion] H. 11648 had more advantages in repairing the contaminated soil than Mauritius.

关 键 词：剑麻 铁矿尾矿库 污染土壤 修复 石碌 

分 类 号：X53[环境科学与工程—环境工程]