北京市大气颗粒物中多环芳烃及碳元素分析  

Analysis of polycyclic aromatic hydrocarbons,organic carbon and element carbon in air particulate matter in Beijing

作　　者：崔蓉[1] 郭新彪[1] 邓芙蓉[1] 刘红[1] 

机构地区：[1]北京大学公共卫生学院劳动卫生与环境卫生学系,北京100191

出　　处：《中国公共卫生》2009年第4期431-432,共2页Chinese Journal of Public Health

基　　金：国家自然科学基金(30571534);国家科学技术部"十一五"支撑计划(2006BAI19B06)

摘　　要：目的了解大气颗粒物PM2.5与PM10中多环芳烃及有机碳、元素碳的污染特征。方法2006年6月16～18日和6月20～22日于北京市城区设置采样点,采集大气颗粒物PM2.5与PM10,并对其中的17种多环芳烃及有机碳、元素碳进行了分析。结果PM2.5与PM10中多环芳烃的平均质量浓度分别为0.011～2.846和0.013～4.415ng/m3;PM2.5与PM10中有机碳和元素碳的平均质量浓度分别为28.56,8.75μg/m3和41.14,15.43μg/m3。结论采样时间内,4环和5环多环芳烃是PM2.5与PM10中17种多环芳烃的主要成分;含碳组分在PM2.5与PM10中所占比例相当,碳仍然是2种粒子中的主要成分之一。Objective To investigate the pollution characteristics of polycyclic aromatic hydrocarbons（PAHs） ,organic carbon （OC） and element carbon （EC） in PM25 and PM10. Methods The PM2.5 and PM10 samples collected from June 16 to 18 and from June 20 to 22 of 2006 in Beijing were measured and 17 kinds of polycyclic aromatic hydrocarbons,orgartic carbon and element carbon were analyzed. Results The average mass concentrations of PAHs in PM2.5 and PM10 were 0. 011 -2. 846 ng/m^3 and 0. 013 -4. 415 ng/m^3 ,respectively. The average mass concentrations of O（2 and EC were 28. 56μg/m^3 ,8. 75μg/m^3 and 41.14 μg/m^3, 15.43μg/m^3 in PM2.5 and PM10 ,respectively. Conclusion In PM2.5 and PM10,4 to 5 rings PAHs were the main components of 17 kinds of PAils, and the total concentration of OC and EC accounted for the similar percentage. Carbon was one of the main components of PM2.5 and PM10 in the air sample in Beijing.

关 键 词：大气颗粒物 多环芳烃 有机碳 元素碳 

分 类 号：X511[环境科学与工程—环境工程]