南京市气溶胶PM_(2.5)中多环芳烃来源识别  

Source identification for PAHs absorbed on PM_(2.5) in Nanjing

作　　者：戴朝霞[1] 

机构地区：[1]江苏广播电视大学基础部环科系,江苏南京210093

出　　处：《环境污染与防治》2007年第4期316-318,共3页Environmental Pollution & Control

摘　　要：对2005年7月至2006年2月采集到的南京市气溶胶PM2.5进行季节性初步分析,并对其中的15种优控多环芳烃(PAHs)进行分析研究,通过比值法判断南京市PAHs夏季主要来源于柴油型燃烧,冬季主要来源于柴油和煤型相结合的燃烧。对15种优控PAHs两两之间的相关性分析,发现各化合物之间显著相关,表明各化合物的来源有相似之处。The survey data were analyzed and reviewed to determine the source and seasonal variat.ion of 15 PAHs absorbed in PM2.5 in Nanjing during July 2005 to February 2006. The results show that combustion of diesel fuels was the dominant source of PAHs found in summer and that burning of mixed diesel fuels and coal produced most of the PAHs in winter. Benzo[a]pyrene was had the greatest risk potential among the PAHs. The amounts of 15 PAHs adsorbed were highly correlated suggesting that they came from the same sources.

关 键 词：PM2.5 多环芳烃(PAHs)来源识别 

分 类 号：X513[环境科学与工程—环境工程]