贵阳市大气PM10中水溶性金属元素的污染特征

2008年7月到2009年4月对贵阳市三个采样点(贵州大学蔡家关校区、市中心和甘荫塘水泥厂附近)的PM10进行了系统采样,运用ICP-AES对PM10中Al、As、Fe、Mn、Pb、Cd、Co、Cu、Zn、Sb、Ti、V等元素进行分析.研究表明,Al、As、Fe、Mn、Zn的含量很高,最高值分别是5809 ng/m3、...

The Pollution Characteristics of Soluble Metals of PM10 in Guiyang City

PM10 samples are systematically collected at three sites(including Caijiaguan Campus of Guizhou University,the center of Guiyang city and nearby cement plant in Ganyingtang) during July 2008 to April 2009.The concentrations of soluble metals such as Al,As,Fe,Mn,Pb,Cd,Co,Cu,Zn,Sb,Ti,V,et al.,in PM10 are measured by ICP-AES.The results show that the concentrations of Al,As,Fe,Mn and Zn are high,the highest concentrations of them are 5809ng/m3,959ng/m3,1041ng/m3,3287ng/m3,1930ng/m3,respectively.And for spatial variations,the concentrations of those soluble metals of PM10 in nearby cement plant in Ganyintang are higher than those of the center and Caijiaguan campus of Guizhou University.Among the metals,the average concentration of Al is highest,reaching 2039 ng/m3.For temporal variations,the concentrations of soluble metals of PM10 collected in winter are highest than other seasons.The results of enrichment factors show that the metals such as As,Cu,Mn,Sb,Zn and Fe,whose enrichment factors are higher than 10,mainly coming from the pollution caused by human economic activities.