石家庄近地表降尘重金属的分布特征及来源分析  

Study on the Distribution and Source of Heavy Metals in Dustfall in Shijiazhuang

作　　者：李超[1] 栾文楼[1] 蔡奎[1] 陈智贤[1] 谷海峰[1] 周永驻[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：《现代地质》2012年第2期415-420,共6页Geoscience

基　　金：河北省政府与中国地质调查局合作项目"河北省城市生态系统区域生态地球化学评价"(200414200007)

摘　　要：系统采集了石家庄市区范围近地表降尘并分析了As、Cd、Cr、Cu、Hg、Ni、Pb、Zn重金属元素的含量,通过元素含量统计分析,发现它们存在较大的变异性,表明重金属含量的空间分布极不均匀。应用地统计模块中的Kriging空间插值分析方法和成图分析,可以看出市区内As、Cd、Cr、Cu呈大面积高值分布,Hg、Ni、Pb、Zn多呈点状污染分布。利用主成分因子分析和重金属元素源指示分析,认为石家庄市区近地表降尘重金属的主要贡献源以燃煤和交通为主。这为全面了解石家庄市区的空气质量状况并为该市大气环境污染治理、城市规划提供了重要依据。The atmospheric dustfalls near surface in Shijiazhuang were systematically sampled and analyzed for their concentrations of As,Cd,Cr,Cu,Hg,Ni,Pb,Zn.The concentrations of heavy metals were in extremely great range and had large coefficients of variation,which implied there were extremely uneven distributions in concentrations of heavy metals.The Kriging interpolation statistical module space analysis method was applied in the distribution of heavy metals in Shijiazhuang,the results showed that As,Cd,Cr,Cu were in a high value distribution,Hg,Ni,Pb and Zn elements had blob-shaped pollution distribution.By reusing the method of factor analysis,we concluded that the coal and transportation have become the main contributions to the heavy metals on the surface of Shijiazhuang.It＇s our aim to fully understand the air quality in Shijiazhuang and provide the most fundamental information for the controlling of air pollution and city planning.

关 键 词：近地表降尘 重金属 Kriging插值分析 因子分析 石家庄 

分 类 号：X142[环境科学与工程—环境科学]