Aerosol scattering coefficients and major chemical compositions of fine particles observed at a rural site in the central Pearl River Delta,South China

作     者：Xinming Wang Xiang Ding Xiaoxin Fu Quanfu He Shaoyi Wang Francois Bernard Xiuying Zhao Dui Wu 

作者机构：State Key Laboratory of Organic GeochemistryGuangzhou Institute of GeochemistryChinese Academy of Sciences Guangzhou 510640China Graduate University of Chinese Academy of SciencesBeijing 100049China Guangzhou Environmental Monitoring CenterGuangzhou 510030China Institute of Tropical and Marine MeteorologyChina Meteorological AgencyGuangzhou 510080China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2012年第24卷第1期

页      面：72-77页

核心收录：

学科分类：0830[工学-环境科学与工程（可授工学、理学、农学学位）] 07[理学] 08[工学] 070104[理学-应用数学] 0803[工学-光学工程] 0701[理学-数学] 

基　　金：supported by the National Natural Science Foundation of China (No. 40821003,41025012) NSFC-Guangdong Joint Funds (No. U0833003) the Natural Science Foundation of Guangdong (No. 7118013) the Bureau of Science,Technology and Information of Guangzhou (No. 2010U1-E00601-2) 

主　　题：scattering coefficients visibility fine particle (PM 2.5) chemical compositions 

摘      要：During November–December 2010 aerosol scattering coefficients were monitored using a single-waved （525 nm） Nephelometer at a regional monitoring station in the central Pearl River Delta region and 24-hr fine particle （PM 2.5） samples were also collected during the period using quartz filters for the analysis of major chemical components including organic carbon （OC）,elemental carbon （EC）,sulfate,nitrate and *** average,these five components accounted for about 85% of PM 2.5 mass and contributed 42% （OC）,19% （SO 4 2 -）,12% （NO 3 -）,8.4% （NH 4＋） and 3.7% （EC）,to PM 2.5 mass.A relatively higher mass scattering efficiency of 5.3 m 2/g was obtained for fine particles based on the linear regression between scattering coefficients and PM 2.5 mass *** extinction budget based on IMPROVE approach revealed that ammonium sulfate,particulate organic matter,ammonium nitrate and EC in average contributed about 32%,28%,20% and 6% to the light extinction coefficients,respectively.