气候变化领域集成服务门户(CCPortal): Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel

CCPortal

DOI	10.5194/acp-21-10005-2021
	Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel
	Fang H.; Huang X.; Zhang Y.; Pei C.; Huang Z.; Wang Y.; Chen Y.; Yan J.; Zeng J.; Xiao S.; Luo S.; Li S.; Wang J.; Zhu M.; Fu X.; Wu Z.; Zhang R.; Song W.; Zhang G.; Hu W.; Tang M.; Ding X.; Bi X.; Wang X.
发表日期	2021
ISSN	1680-7316
起始页码	10005
结束页码	10013
卷号	21 期号:13
英文摘要	Intermediate-volatility organic compounds (IVOCs) emitted from vehicles are important precursors to secondary organic aerosols (SOAs) in urban areas, yet vehicular emission of IVOCs, particularly from on-road fleets, is poorly understood. Here we initiated a field campaign to collect IVOCs with sorption tubes at both the inlet and the outlet in a busy urban tunnel (>30000 vehicles per day) in south China for characterizing emissions of IVOCs from on-road vehicles. The average emission factor of IVOCs (EFIVOCs) was measured to be 16.77±0.89 mg km-1 (average ±95 % CI, confidence interval) for diesel and gasoline vehicles in the fleets, and based on linear regression, the average EFIVOCs was derived to be 62.79±18.37 mg km-1 for diesel vehicles and 13.95±1.13 mg km-1 for gasoline vehicles. The EFIVOCs for diesel vehicles from this study was comparable to that reported previously for non-road engines without after-treatment facilities, while the EFIVOCs for gasoline vehicles from this study was much higher than that recently tested for a China V gasoline vehicle. IVOCs from the on-road fleets did not show significant correlation with the primary organic aerosol (POA) or total non-methane hydrocarbons (NMHCs) as results from previous chassis dynamometer tests. Estimated SOA production from the vehicular IVOCs and VOCs surpassed the POA by a factor of ∼2.4, and IVOCs dominated over VOCs in estimated SOA production by a factor of ∼7, suggesting that controlling IVOCs is of greater importance to modulate traffic-related organic aerosol (OA) in urban areas. The results demonstrated that although on-road gasoline vehicles have much lower EFIVOCs, they contribute more IVOCs than on-road diesel vehicles due to its dominance in the on-road fleets. However, due to greater diesel than gasoline fuel consumption in China, emission of IVOCs from diesel engines would be much larger than that from gasoline engines, signaling the overwhelming contribution of IVOC emissions by non-road diesel engines in China. © Copyright:
语种	英语
scopus关键词	aerosol; diesel engine; fuel consumption; nonmethane hydrocarbon; traffic emission; tunnel; urban area; volatile organic compound; China
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246757
作者单位	State Key Laboratory of Organic Geochemistry, Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; Cas Center for Excellence in Deep Earth Science, Guangzhou, 510640, China; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; School of Resources and Environment, University of Chinese Academy of Sciences, Beijing, 100049, China; Guangzhou Ecological and Environmental Monitoring Center of Guangdong Province, Guangzhou, 510060, China; Guangzhou Environmental Technology Center, Guangzhou, 510180, China; Guangzhou Tunnel Development Company, Guangzhou, 510133, China
推荐引用方式 GB/T 7714	Fang H.,Huang X.,Zhang Y.,et al. Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel[J],2021,21(13).
APA	Fang H..,Huang X..,Zhang Y..,Pei C..,Huang Z..,...&Wang X..(2021).Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(13).
MLA	Fang H.,et al."Measurement report: Emissions of intermediate-volatility organic compounds from vehicles under real-world driving conditions in an urban tunnel".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.13(2021).