气候变化领域集成服务门户(CCPortal): Characteristics of volatile organic compounds (VOCs) based on multisite observations in Hebei province in the warm season in 2019

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DOI	10.1016/j.atmosenv.2021.118435
	Characteristics of volatile organic compounds (VOCs) based on multisite observations in Hebei province in the warm season in 2019
	Wang Z.; Wang H.; Zhang L.; Guo J.; Li Z.; Wu K.; Zhu G.; Hou D.; Su H.; Sun Z.; Wei Y.; Qian Y.
发表日期	2021
ISSN	1352-2310
卷号	256
英文摘要	Hebei is one of the most air-polluted provinces located in China. In this study, NOx, volatile organic compounds (VOCs), and ozone (O3) observational data obtained at 7 monitoring sites in Hebei Province in the warm season (May to September) in 2019 were analyzed to investigate the spatiotemporal distribution, composition characteristics, and chemical reactivity of VOCs. Results indicated that VOCs concentrations were the highest in Shijiazhuang and Langfang (47.8 and 39.2 ppb, respectively) and the lowest in Zhangjiakou and Chengde (16.6 and 12.0 ppb, respectively). In the warm season in 2019, the monthly average concentrations of VOCs increased initially and decreased subsequently, and the highest concentration found in July and August. The diurnal variation patterns of VOCs exhibited a double-peak curve, with the first peak occurring between 07:00–09:00, influenced by the production and life activities of residents. The second peak occurred between 23:00–0:00 due to the poor atmospheric diffusion conditions at nighttime and the possible transportation from residual layer. Alkanes, haloalkanes, and alkenes were responsible for the largest components to VOCs in Hebei Province, with the average proportions at the 7 monitoring sites of 43.25%, 30.39% and 15.00%, respectively. The ratios of toluene to benzene (T/B) of the monitored sites indicated that the VOCs concentrations at the Shijiazhuang and Xingtai sites were mainly influenced by emissions from coal combustion. In comparison, the VOCs concentrations at the Baoding and Langfang sites were mainly influenced by motor vehicle emissions, while the sites at Zhangjiakou and Chengde were mainly influenced by solvent-based coating and industrial process emissions. Alkenes had the highest chemical reactivity of the VOCs in Hebei Province, ethylene, propene, toluene, and 1-butene were also the high chemical reactivity species. Lastly, tailored schemes for the reduction of O3 precursor were proposed based on the NOx, VOCs, and O3 data obtained from the various monitoring sites. © 2021 Elsevier Ltd
关键词	Chemical reactivity Hebei O3 attainment pathways Spatiotemporal distribution VOCs
语种	英语
scopus关键词	Chemical analysis; Coal combustion; Ethylene; Industrial emissions; Nitrogen oxides; Spatial distribution; Toluene; Composition characteristics; Hebei; Hebei Province; Monitoring sites; Multisite observations; O3 attainment pathway; Observational data; Spatiotemporal distributions; Volatile organics; Warm seasons; Volatile organic compounds; 1 butene; 1,2,3 trimethybenzene; 1,2,3 trimethylbenzene; 2 butene; 2 pentene; 2,2 dimethylbutane; acetylene; alkane; alkene; benzene; chloroethene; coal; ethane; ethylbenzene; ethylene; isobutane; isopentane; isoprene; meta xylene; nitrogen oxide; ortho xylene; ozone; para xylene; pentane; propane; propylene; solvent; styrene; toluene; unclassified drug; vinylidene chloride; volatile organic compound; atmospheric pollution; diurnal variation; industrial emission; observational method; seasonal variation; spatiotemporal analysis; volatile organic compound; air pollution; Article; atmospheric diffusion; autumn; chemical composition; China; circadian rhythm; coating (procedure); combustion; comparative study; concentration (parameter); environmental monitoring; human; motor vehicle; priority journal; seasonal variation; summer; traffic and transport; China; Hebei
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/248413
作者单位	State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, China; Jinan Environmental Research Institute, Jinan, 250101, China; Center for Environmental Emergency and Heavy Pollution Early Warning, Hebei Environmental Protection Bureau, Shijiazhuang, China; Plateau Atmosphere and Environment Key Laboratory of Sichuan Province, School of Atmospheric Sciences, Chengdu University of Information Technology, Chengdu, China; Department of Land, Air, and Water Resources, University of California, Davis, CA, United States; Hebei Province Ecology Environmental Monitoring Center, Shijiazhuang, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, 100089, China
推荐引用方式 GB/T 7714	Wang Z.,Wang H.,Zhang L.,et al. Characteristics of volatile organic compounds (VOCs) based on multisite observations in Hebei province in the warm season in 2019[J],2021,256.
APA	Wang Z..,Wang H..,Zhang L..,Guo J..,Li Z..,...&Qian Y..(2021).Characteristics of volatile organic compounds (VOCs) based on multisite observations in Hebei province in the warm season in 2019.ATMOSPHERIC ENVIRONMENT,256.
MLA	Wang Z.,et al."Characteristics of volatile organic compounds (VOCs) based on multisite observations in Hebei province in the warm season in 2019".ATMOSPHERIC ENVIRONMENT 256(2021).