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DOI	10.1016/j.atmosenv.2021.118295
	Ambient naphthalene and methylnaphthalenes observed at an urban site in the Pearl River Delta region: Sources and contributions to secondary organic aerosol
	Fang H.; Luo S.; Huang X.; Fu X.; Xiao S.; Zeng J.; Wang J.; Zhang Y.; Wang X.
发表日期	2021
ISSN	1352-2310
卷号	252
英文摘要	Naphthalene (Nap) and methylnaphthalenes (MN) are among important intermediate volatility organic compounds (IVOCs) that contribute substantially to the formation of secondary organic aerosols (SOA), yet studies about their ambient levels, source contributions and SOA productions are quite limited. In this study a field campaign was conducted from September 23rd to October 4th, 2019 at an urban site in the megacity Guangzhou in south China for characterizing ambient Nap and MN. Measured Nap, 2-MN, and 1-MN concentrations were 94.0 ± 23.1, 25.3 ± 4.5, and 11.8 ± 2.1 ng m−3 (mean ± 95% C.I.), respectively. Initial levels and chemical losses of Nap and MN were estimated using a photochemical age-based parameterization method, and results demonstrated that on average ~60% of Nap + MN were degraded during photochemical ageing. During the photochemically active period (12:00–15:00), Nap and MN could contribute 12.4% of estimated SOA formed from single-ring aromatics, Nap and MN altogether, while their initial levels were less than 2% of single-ring aromatics. Source apportioning by the positive matrix factorization (PMF) coupled with the photochemical age-based parameterization revealed that gasoline exhaust was the largest source, accounting for 39.1% of Nap and MN, followed by biomass/coal burning (29.9%), diesel exhaust (26.3%) and industrial emission (4.7%). © 2021 Elsevier Ltd
关键词	Intermediate-volatility organic compounds (IVOCs)Methylnaphthalenes Naphthalene Photochemical ageing Secondary organic aerosol (SOA)Source apportionment
语种	英语
scopus关键词	Aerosols; Factorization; Industrial emissions; Urban growth; Diesel exhausts; Field campaign; Gasoline exhausts; Parameterization method; Pearl River Delta region; Positive Matrix Factorization; Secondary organic aerosols; Source contributions; Naphthalene; coal; methylnaphthalene derivative; naphthalene; naphthalene derivative; unclassified drug; aerosol; aerosol composition; air quality; atmospheric pollution; exhaust emission; megacity; organic pollutant; photochemistry; urban area; volatile organic compound; air pollution control; ambient air; Article; autumn; biomass; boundary layer; chemical reaction; China; circadian rhythm; coating (procedure); controlled study; dispersion; exhaust gas; flame ionization detection; humidity; photochemistry; priority journal; quality control; river; secondary organic aerosol; spring; summer; temperature; urban area; wind speed; winter; China; Guangdong; Zhujiang Delta
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/248526
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; Center for Excellence in Urban Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; University of Chinese Academy of Sciences, Beijing, 100049, China
推荐引用方式 GB/T 7714	Fang H.,Luo S.,Huang X.,et al. Ambient naphthalene and methylnaphthalenes observed at an urban site in the Pearl River Delta region: Sources and contributions to secondary organic aerosol[J],2021,252.
APA	Fang H..,Luo S..,Huang X..,Fu X..,Xiao S..,...&Wang X..(2021).Ambient naphthalene and methylnaphthalenes observed at an urban site in the Pearl River Delta region: Sources and contributions to secondary organic aerosol.ATMOSPHERIC ENVIRONMENT,252.
MLA	Fang H.,et al."Ambient naphthalene and methylnaphthalenes observed at an urban site in the Pearl River Delta region: Sources and contributions to secondary organic aerosol".ATMOSPHERIC ENVIRONMENT 252(2021).