A primarily study on size distribution of polycyclic aromatic hydrocarbons （PAHs） in atmospheric aerosol during foggy days in the suburban area of Nanjing

作     者：HUANG Hongli~(a,c) FAN Shu-xian~(a,b) TANG Lili~c YANG Xuezhen~c LI Hongshuang~c (a Jiangsu Key Laboratory of Meteorological Disaster(Nanjing University of Information Science and Technology) Nanjing 210044,P.R.China )(b LAPC,Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 100029,China )(c College of Environmental Science and Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China) 

会议名称：《第五届海峡两岸气溶胶技术研讨会》

会议日期：2008年

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：National Natural Science Foundation (40775012) 

关 键 词：Fog Atmospheric aerosol PAHs Size distribution 

摘      要：正The purpoea of this study was to characterize size distributions of 16 polycyclic aromatic hydrocarbons （PA Hs） in the suburban area of Nanjing in foggy days Size distribution aerosol samples collected in foggy and fine days have been analyzed by gas chromatography with mass selective detection （GC-MS）.The content of inhalable partides could be reduced by fog,especially at the particle diameter larger than 4.7um could be wiped off *** are two peeks at size diameter 0.65-1.1 and 3.3-4.7um in foggy days,indicating that size distributions of PM were both bi-modal with a peek in the fine partide size and the other peek in the coarsa particle *** nighttime of both sampling weather,PAHs were predominated in fine particles（Dp2.1 um）.On the other hand,Fog reduced the concentration of PAHs in coarse particles（Dp2.1 um） in nighttime.