北京市密云水库上游金铁矿区土壤重金属污染特征及对比研究

第32卷第6期

2012年6月

环㊀境㊀科㊀学㊀学㊀报㊀Acta Scientiae Circumstantiae

Vol.32,No.6Jun.,2012

基金项目:国家自然科学基金(No.41173113);中国科学院百人计划项目

Supported by the National Natural Science Foundation of China(No.41173113)and the Hundred Talent Project of Chinese Academy of Sciences 作者简介:黄兴星(1989 ),男,E-mail:weiwei1686@;∗通讯作者(责任作者),E-mail:jih_0000@

Biography :HUANG Xingxing(1989 ),male,E-mail:weiwei1686@;∗Corresponding author ,E-mail:jih_0000@

黄兴星,朱先芳,唐磊,等.2012.北京市密云水库上游金铁矿区土壤重金属污染特征及对比研究[J].环境科学学报,32(6):1520-1528

Huang X X,Zhu X F,Tang L,et al .2012.Pollution characteristics and their comparative study of heavy metals in the gold and iron mine soil of the upstream area of Miyun Reservoir,Beijing[J].Acta Scientiae Circumstantiae,32(6):1520-1528

北京市密云水库上游金铁矿区土壤重金属污染特征及对比研究

黄兴星1,2,朱先芳3,唐磊4,季宏兵1,2,3,∗

1.北京科技大学土木与环境工程学院,北京100083

2.北京科技大学国家环境与能源国际科技合作基地,北京100083

3.首都师范大学资源环境与旅游学院首都圈生态环境过程重点实验室,北京100048

4.北京市地质工程设计研究院,北京101500

收稿日期:2011-08-23㊀㊀㊀修回日期:2011-10-09㊀㊀㊀录用日期:2011-10-10

摘要:不同金属矿山选冶活动造成的矿区及周边土壤中重金属的分布累积特征不同.为了解密云水库上游金矿和铁矿矿区土壤中重金属地球化学特征的异同及污染状况,对区域内典型的金矿和铁矿矿区进行土壤样品采集,应用地球化学方法研究了2种土壤中重金属的污染特征,并应用地累积指数法评价了其污染状况.结果表明,2种土壤中除As 外的其它重金属含量明显高于北京市土壤重金属背景值,金矿矿区土壤重金属含量普遍高于铁矿矿区.相关性分析表明,金矿矿区土壤中Cu 含量与Pb㊁Zn(p <0.01)及Cr㊁有机质(OM)含量(p <0.05)之间显著相关,pH 值与Pb 含量(p <0.01)及Hg 含量(p <0.05)呈显著负相关,而铁矿矿区土壤中重金属含量之间的相关性不显著.金矿尾砂中重金属含量明显高于铁矿尾砂,与矿区土壤污染状况一致.地累积指数法评价结果显示,金铁矿区土壤中重金属的污染程度均已十分严重,金矿矿区土壤污染程度高于铁矿,金矿矿区土壤重金属的污染程度由高到低依次为:Pb >Hg >Cd >Cr >Cu >Zn >Co >As;铁矿矿区土壤重金属的污染程度由高到低依次为:Pb >Cd >Cr >Co >Cu >Zn >Hg >As.该研究数据可为同一区域内不同金属矿区重金属污染的有效监控与治理提供科学依据.

关键词:北京;土壤;重金属;金矿;铁矿;地累积指数

文章编号:0253-2468(2012)06-1520-09㊀㊀㊀中图分类号:X524㊀㊀㊀文献标识码:A

Pollution characteristics and their comparative study of heavy metals in the gold and iron mine soil of the upstream area of Miyun Reservoir ,Beijing

HUANG Xingxing 1,2,ZHU Xianfang 3,TANG Lei 4,JI Hongbing 1,2,3,∗

1.Civil &Environment Engineering School,University of Science &Technology Beijing,Beijng 100083

2.National Environment &Energy International Cooperation,University of Science &Technology Beijing,Beijng 100083

3.The Key Laboratory of Metropolitan Eco-Environmental Processes,College of Resource Environment and Tourism,Capital Normal University,Beijing 100048

4.Beijing Geo-engineering Design and Research Institute,Beijing 101500

Received 23August 2011;㊀㊀㊀received in revised form 9October 2011;㊀㊀㊀accepted 10October 2011

Abstract :The distribution and cumulative characteristics of heavy metals in different mines and surrounding soil caused by ore dressing and smelting activities were different.In order to investigate the geochemical characteristics and pollution status of heavy metals in the upstream areas of Miyun Reservoir,the soil samples from typical gold and iron mines were analyzed by the geochemical method and the Geoaccumulation Index was used to evaluate the pollution status of heavy metals.The results showed that,the metal concentrations in the Gold and Iron mine soil samples exceeded the background levels in Beijing except for As,and the content of heavy metal in gold mine soil was higher than that of iron mine soil.Moreover,correlation analysis indicated that significant correlations existed among Pb,Zn (p <0.01),Cr,OM (p <0.05)and Cu,while significant negative correlations existed among Pb (p <0.01),Hg (p <0.05)and pH in gold mine soil.There were no significant correlations among metals in iron mine soil.In addition,heavy metals in gold mine tailings were significantly higher than those in iron ore tailings,which was consistent with the soil pollution status in mines.The