气候变化领域集成服务门户(CCPortal): Important contributions of alkenes and aromatics to VOCs emissions, chemistry and secondary pollutants formation at an industrial site of central eastern China

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DOI	10.1016/j.atmosenv.2020.117927
	Important contributions of alkenes and aromatics to VOCs emissions, chemistry and secondary pollutants formation at an industrial site of central eastern China
	Gao Y.; Li M.; Wan X.; Zhao X.; Wu Y.; Liu X.; Li X.
发表日期	2021
ISSN	13522310
卷号	244
英文摘要	Volatile organic compounds (VOCs) play important roles in the tropospheric atmosphere. In this study, VOCs were measured at an urban site of Zibo city in September 2018 using an online gas chromatography-time of flight mass spectrometry instrument (GC-TOFMS). Diurnal profile analysis showed that while the removal of most reactive hydrocarbons such as alkanes, small alkenes, and aromatics was governed by OH chemistry, nighttime removal for several highly reactive alkenes by ozone was also significant. The influence of nighttime removal on emission ratio determinations were further explored by parameterization method based on OH radical chemistry/ozone chemistry and comparison of emission ratios with nearby regions. The results revealed that nighttime removal for several alkenes likely leaded to underestimation of emission ratios in previous studies. The emission ratios of aromatics in Zibo were also unexpectedly higher than those at the receptor site in central eastern China. Detailed source analyses of VOCs using a positive matrix factorization (PMF) method suggested important contributions from both petrochemical emission and vehicle exhaust & LPG usage for measured alkenes and dominant contribution from coal combustion for aromatics. Ozone formation potential (OFP) and secondary organic aerosol potential (SOAP) calculation suggested that alkenes were the dominant contributor to OFP (59.4%); while aromatics could produce large amounts of SOA (1.10 ± 0.88 μg m−3) and naphthalene alone dominated (~43.0%) the total SOA estimated from measured VOCs. The results enable improved mitigation strategies and chemical links between direct emissions and SOA/ozone impacts on climate and health in these regions. © 2020 Elsevier Ltd
英文关键词	Emission ratio; Naphthalene; Night removal; O3 exposure; VOC chemistry
语种	英语
scopus关键词	Aromatization; Coal combustion; Factorization; Free radicals; Gas chromatography; Industrial emissions; Liquefied petroleum gas; Mass spectrometry; Naphthalene; Ozone; Urban growth; Volatile organic compounds; Dominant contributions; Mitigation strategy; Online gas chromatography; Ozone formation potentials; Parameterization method; Positive Matrix Factorization; Secondary organic aerosols; Time of flight mass spectrometry; Olefins; alkane; alkene derivative; aromatic compound; coal; hydrocarbon; hydroxyl radical; liquefied petroleum gas; naphthalene; ozone; volatile organic compound; aerosol; alkene; coal combustion; industrial emission; ozone; urban pollution; urban site; volatile organic compound; Article; China; city; combustion; controlled study; mass fragmentography; priority journal; secondary organic aerosol; time of flight mass spectrometry; urban area; waste component removal; China; Shandong; Zibo
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/152974
作者单位	Department of Environmental Science & Engineering, Fudan University, Shanghai, 200032, China; Institute of Mass Spectrometer and Atmospheric Environment, Jinan University, Guangzhou, 510632, China; Guangdong Provincial Engineering Research Center for on-line Source Apportionment System of Air Pollution, Guangzhou, 510632, China; Bay Environmental Technology Corporation, Beijing, 100101, China; State Environmental Protection Technology Center for Volatile Organic Compounds(VOCs) Control in Petroleum & Petrochemical Industries, Beijing, 100101, China; Total Pollutant Control Office of Linzi District, Zibo, 255400, China; Environmental Monitoring Station of Linzi District, Zibo, 255400, China; State Environmental Protection Key Laboratory of Formation and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai, 200032, China
推荐引用方式 GB/T 7714	Gao Y.,Li M.,Wan X.,et al. Important contributions of alkenes and aromatics to VOCs emissions, chemistry and secondary pollutants formation at an industrial site of central eastern China[J],2021,244.
APA	Gao Y..,Li M..,Wan X..,Zhao X..,Wu Y..,...&Li X..(2021).Important contributions of alkenes and aromatics to VOCs emissions, chemistry and secondary pollutants formation at an industrial site of central eastern China.Atmospheric Environment,244.
MLA	Gao Y.,et al."Important contributions of alkenes and aromatics to VOCs emissions, chemistry and secondary pollutants formation at an industrial site of central eastern China".Atmospheric Environment 244(2021).