济南市环境空气颗粒物中PCBs的测定  

Determination of polychlorinated biphenyls in particles in ambient air in Jinan

作　　者：葛璇[1] 刘泽常[1] 刘玉堂[1] 郝长瑞[1] 

机构地区：[1]山东建筑大学市政与环境工程学院,山东济南250101

出　　处：《山东建筑大学学报》2010年第2期193-197,共5页Journal of Shandong Jianzhu University

基　　金：山东省自然科学基金项目(Y2007G59)

摘　　要：通过单因素实验确定加速溶剂萃取仪的最佳萃取条件为萃取温度100℃、静态萃取2次,萃取时间5m in、丙酮与正己烷体积比为1∶1。以济南市区为研究区域,在最佳萃取条件下用加速溶剂萃取仪对在济南市环境监测站楼顶环境空气中采集的带有不同粒径颗粒物的采样膜进行萃取,将提取液经过旋转蒸发仪蒸发、硅胶柱层析、氮吹仪氮吹后用GC-ECD测定其多氯联苯的含量。通过对测得的数据分析,得出2009年8月济南市区环境空气颗粒物中PM2.5的含量最多,PCBs主要附着在粒径为10μm以下的颗粒物中。PM2.5中含量最多的PCBs是PCB180,PM5、PM10、TSP中含量最多的PCBs均为PCB118。Through single factor experiments,this paper determinates the best extraction condition is under the temperature of 100℃,static extraction frequence being twice,extraction time 5 minutes and the volume ratio of acetone and n-hexane is 1∶1.Taking Jinan as the research case,the experiments use ASE to extract particles of different sizes from the collected on the sampling membranes of environmental monitoring station of Jinan after the evaporation of roteavapor and chromatographic analysis of silica column and organomation,the extracted liquid determines the content of PCBs by GC-ECD.Through the analysis of the data,we can know that the highest content of particles in ambient air in Jinan in August 2009 is PM2.5,and PCBs attaches to PM10 mainly.The highest content of PCBs is PCB180 in PM2.5 and the highest content of PCBs is PCB118 in PM5,PM10 and TSP.

关 键 词：颗粒物 PCBS 加速溶剂萃取 GC-ECD 

分 类 号：X513[环境科学与工程—环境工程]