VOC emissions, evolutions and contributions to SOA formation at a   receptor site in eastern China

doi:10.5194/acp-13-8815-2013

CORC > 北京大学 > 环境科学与工程学院

	VOC emissions, evolutions and contributions to SOA formation at a receptor site in eastern China
	Yuan, B. ; Hu, W. W. ; Shao, M. ; Wang, M. ; Chen, W. T. ; Lu, S. H. ; Zeng, L. M. ; Hu, M.
刊名	atmospheric chemistry and physics
	2013
关键词	SECONDARY ORGANIC AEROSOL POLYCYCLIC AROMATIC-HYDROCARBONS MEXICO-CITY MASS-SPECTROMETER RURAL SITE N-ALKANES PHOTOOXIDATION YIELDS NOX OXIDATION
DOI	10.5194/acp-13-8815-2013
英文摘要	Volatile organic compounds (VOCs) were measured by two online instruments (GC-FID/MS and PTR-MS) at a receptor site on Changdao Island (37.99 degrees N, 120.70 degrees E) in eastern China. Reaction with OH radical dominated chemical losses of most VOC species during the Changdao campaign. A photochemical-age-based parameterization method is used to calculate VOC emission ratios and to quantify the evolution of ambient VOCs. The calculated emission ratios of most hydrocarbons agree well with those obtained from emission inventory data, but determined emission ratios of oxygenated VOCs (OVOCs) are significantly higher than those from emission inventory data. The photochemical-age-based parameterization method is also used to investigate primary emissions and secondary formation of organic aerosol. The primary emission ratio of organic aerosol (OA) to CO is determined to be 14.9 mu g m(-3) ppm(-1), and secondary organic aeorosols (SOA) are produced at an enhancement ratio of 18.8 mu g m(-3) ppm(-1) to CO after 50 h of photochemical processing in the atmosphere. SOA formation is significantly higher than the level determined from VOC oxidation under both high-NOx (2.0 mu g m(-3) ppm(-1) CO) and low-NOx conditions (6.5 mu g m(-3) ppm(-1) CO). Polycyclic aromatic hydrocarbons (PAHs) and higher alkanes (>C10) account for as high as 17.4% of SOA formation, which suggests semi-volatile organic compounds (SVOCs) may be a large contributor to SOA formation during the Changdao campaign. The SOA formation potential of primary VOC emissions determined from field campaigns in Beijing and Pearl River Delta (PRD) is lower than the measured SOA levels reported in the two regions, indicating SOA formation is also beyond explainable by VOC oxidation in the two city clusters.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000324400600019&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Meteorology & Atmospheric Sciences; SCI(E); 34; ARTICLE; 17; 8815-8832; 13
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/324401]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yuan, B.,Hu, W. W.,Shao, M.,et al. VOC emissions, evolutions and contributions to SOA formation at a receptor site in eastern China[J]. atmospheric chemistry and physics,2013.
APA	Yuan, B..,Hu, W. W..,Shao, M..,Wang, M..,Chen, W. T..,...&Hu, M..(2013).VOC emissions, evolutions and contributions to SOA formation at a receptor site in eastern China.atmospheric chemistry and physics.
MLA	Yuan, B.,et al."VOC emissions, evolutions and contributions to SOA formation at a receptor site in eastern China".atmospheric chemistry and physics (2013).