Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions

doi:10.1021/acs.est.0c08591

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 粉尘与环境研究室

	Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions
	Liao, Keren 1; Chen, Qi 1; Liu, Ying 1; Li, Yong Jie 2; Lambe, Andrew T.3; Zhu, Tong 1; Huang, Ru-Jin 4,5; Zheng, Yan 1; Cheng, Xi 1; Miao, Ruqian 1
刊名	ENVIRONMENTAL SCIENCE & TECHNOLOGY
	2021-06-01
卷号	55 期号:11 页码:7276-7286
关键词	mobile laboratory vehicle emissions oxidation flow reactor high NOx SOA spatial distributions
ISSN号	0013-936X
DOI	10.1021/acs.est.0c08591
通讯作者	Chen, Qi(qichenpku@pku.edu.cn)
英文摘要	Vehicle emissions are an important source of urban particular matter. To investigate the secondary organic aerosol (SOA) formation potential of real-world vehicle emissions, we exposed on-road air in Beijing to hydroxyl radicals generated in an oxidation flow reactor (OFR) under high-NOx conditions on-board a mobile laboratory and characterized SOA and their precursors with a suite of state-of-the-art instrumentation. The OFR produced 10-170 mu g m(-3) of SOA with a maximum SOA formation potential of 39-50 mu g m(-3) ppmv(-1) CO that occurred following an integrated OH exposure of (1.3-2.0) x 10(11) molecules cm(-3) s. The results indicate relatively shorter photochemical ages for maximum SOA production than previous OFR results obtained under low-NOx conditions. Such timescales represent the balance of functionalization and fragmentation, possibly resulting in different spatial distributions of SOA in different seasons as the oxidant level changes. The detected precursors may explain as much as 13% of the observed SOA with the remaining plausibly contributed by the oxidation of undetected intermediate-volatility organic compounds. Extrapolation of the results suggests an annual SOA production rate of 0.78 Tg yr(-1) from mobile gasoline sources in China, highlighting the importance of effective regulation of gaseous vehicular precursors to improve air quality in the future.
资助项目	National Natural Science Foundation of China[91544107] ; National Natural Science Foundation of China[41875165] ; National Natural Science Foundation of China[51861135102] ; National Natural Science Foundation of China[41961134034] ; 111 Project of Urban Air Pollution and Health Effects[B20009]
WOS关键词	OXIDATION FLOW REACTORS ; DIRECT-INJECTION GDI ; PARTICULATE MATTER ; GASOLINE VEHICLES ; RADICAL CHEMISTRY ; COLD-START ; OH ; AMBIENT ; AIR ; INTERMEDIATE
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000659374200009
资助机构	National Natural Science Foundation of China ; 111 Project of Urban Air Pollution and Health Effects
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/16780]
专题	地球环境研究所_粉尘与环境研究室
通讯作者	Chen, Qi
作者单位	1.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, BIC ESAT & IJRC, Beijing 100871, Peoples R China 2.Univ Macau, Fac Sci & Technol, Dept Civil & Environm Engn, Taipa 999078, Macao, Peoples R China 3.Aerodyne Res Inc, Billerica, MA 01821 USA 4.Chinese Acad Sci, Ctr Excellence Quaternary Sci & Global Change, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian 710075, Peoples R China 5.Chinese Acad Sci, Key Lab Aerosol Chem & Phys, Inst Earth Environm, Xian 710075, Peoples R China
推荐引用方式 GB/T 7714	Liao, Keren,Chen, Qi,Liu, Ying,et al. Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2021,55(11):7276-7286.
APA	Liao, Keren.,Chen, Qi.,Liu, Ying.,Li, Yong Jie.,Lambe, Andrew T..,...&Jia, Tianjiao.(2021).Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions.ENVIRONMENTAL SCIENCE & TECHNOLOGY,55(11),7276-7286.
MLA	Liao, Keren,et al."Secondary Organic Aerosol Formation of Fleet Vehicle Emissions in China: Potential Seasonality of Spatial Distributions".ENVIRONMENTAL SCIENCE & TECHNOLOGY 55.11(2021):7276-7286.