气候变化领域集成服务门户(CCPortal): Real-world emissions of carbonyls from vehicles in an urban tunnel in south China

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DOI	10.1016/j.atmosenv.2021.118491
	Real-world emissions of carbonyls from vehicles in an urban tunnel in south China
	Wu Z.; Zhang Y.; Pei C.; Huang Z.; Wang Y.; Chen Y.; Yan J.; Huang X.; Xiao S.; Luo S.; Zeng J.; Wang J.; Fang H.; Zhang R.; Li S.; Fu X.; Song W.; Wang X.
发表日期	2021
ISSN	1352-2310
卷号	258
英文摘要	Carbonyls play a vital role in atmospheric photochemistry. Vehicle emission is among most important primary emission sources of carbonyls in urban areas, yet knowledge is quite scarce about real-world emissions of carbonyls with the changing on-road vehicle fleets. In this study, emissions of carbonyls were characterized based on tests in a busy urban tunnel in south China. Emission factor (EF) of carbonyls was measured to be 9.89 ± 0.65 mg km−1 on average, in which formaldehyde alone shared 53.1% with an EF of 5.25 ± 0.35 mg km−1, followed by acetaldehyde with an EF of 1.47 ± 0.13 mg km−1. Glyoxal and methylglyoxal showed identical EFs of 0.18 ± 0.02 mg km−1. Multiple linear regression retrieved total carbonyl EFs of 5.68, 47.71 and 35.09 mg km−1 and ozone formation potentials (OFPs) of 38.4, 329.3, and 242.4 mg km−1 for gasoline, diesel and liquefied petroleum gas vehicles (LPGVs), respectively. The unexpectedly high carbonyl emissions from LPGVs were largely attributed to the lack of after-treatment systems or the inefficiency of the after-treatment systems. Among vehicle-emitted non-methane hydrocarbons and carbonyls, carbonyls could contribute ~20% of the total OFPs while they only accounted for 7.1% of the total mass. © 2021 Elsevier Ltd
关键词	Carbonyls Emission factor On-road vehicles Ozone formation potential (OFP)Tunnel test Vehicle exhaust
语种	英语
scopus关键词	Gasoline; Linear regression; Roads and streets; Vehicles; Emission factors; On-road vehicle; Ozone formation potential; Ozone formation potentials; Real-world emission; South China; Tunnel test; Urban tunnel; Vehicle exhausts; [carbonyl; Ozone; acetaldehyde; carbonyl derivative; diesel fuel; formaldehyde; gasoline; glyoxal; hydrocarbon; liquefied petroleum gas; methylglyoxal; ozone; acetaldehyde; atmospheric chemistry; carbonyl compound; exhaust emission; formaldehyde; liquefied petroleum gas; ozone; tunnel; air pollutant; Article; China; exhaust gas; measurement; motor vehicle; urban area; China
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/248378
作者单位	State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Guangzhou Environmental Monitoring Center, Guangzhou, 510030, China; Guangzhou Environmental Technology Center, Guangzhou, 510030, China; Guangzhou Tunnel Development Company, Guangzhou, 510133, China
推荐引用方式 GB/T 7714	Wu Z.,Zhang Y.,Pei C.,et al. Real-world emissions of carbonyls from vehicles in an urban tunnel in south China[J],2021,258.
APA	Wu Z..,Zhang Y..,Pei C..,Huang Z..,Wang Y..,...&Wang X..(2021).Real-world emissions of carbonyls from vehicles in an urban tunnel in south China.ATMOSPHERIC ENVIRONMENT,258.
MLA	Wu Z.,et al."Real-world emissions of carbonyls from vehicles in an urban tunnel in south China".ATMOSPHERIC ENVIRONMENT 258(2021).