石家庄市大气降尘重金属元素来源分析  

Analysis of the Source of Heavy Metal Elements in Atmosphere over Shijiazhuang City

作　　者：蔡奎[1] 栾文楼[1] 李随民[1] 李超[1] 冯星[1] 李谦谦[1] 

机构地区：[1]石家庄经济学院资源与环境工程研究所,河北石家庄050031

出　　处：《地球与环境》2012年第1期37-43,共7页Earth and Environment

基　　金：河北省政府与中国地质调查局合作项目;河北省农业地质调查项目(200414200007)资助

摘　　要：在石家庄市采集了51件大气降尘样品,对其重金属来源进行了解析。主要针对样品所含有的As、Cd、Cr、Cu、Hg、Ni、Pb、Zn等8种重金属元素,进行相关性、富集因子及主成分分析。通过分析表明Pb与Cr、As、Hg、Ni相关性明显,Cr元素主要来源于土壤颗粒,As、Zn、Pb、Ni、Cu元素可能叠加工业污染,Hg、Cd污染严重,Pb元素主要受到燃煤和交通污染。重金属元素的空间分布表明市区含量低,二环外含量高,受交通和废气污染较重。Over Shijiazhuang City there were collected 51 atmospheric dust fall samples to analyze the sources of heavy metals.The samples mainly contain As,Cd,Cr,Cu,Hg,Ni,Pb,Zn etc.,totaling 8 kinds of heavy metals.Their correlations,enrichment factors and principal components were analyzed.The results showed that Pb and Cr,As,Hg,Ni are of obvious correlation,Cr element is mainly derived from soil particles,As,Zn,Pb,Ni,Cu elements may be superimposed on the impact of industrial pollution,Hg,Cd are serious pollutants,and Pb is mainly derived from coal combustion and transport activities.The spatial distribution of heavy metals in urban areas showed that the concentrations of heavy metals are relatively low,but they are high outside the Second Ring Road,mainly owing to heavy traffic and air pollution.

关 键 词：石家庄 大气降尘 来源 重金属 因子分析 

分 类 号：X142[环境科学与工程—环境科学] X831