气候变化领域集成服务门户(CCPortal): Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar

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DOI	10.1016/j.atmosenv.2020.118045
	Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar
	Wang X.; Cai Y.; Wang J.; Zhao Y.
发表日期	2021
ISSN	13522310
卷号	245
英文摘要	Ozone has become a severe ambient pollutant. As the critical precursors of the formation of ozone, volatile organic compounds (VOCs) can adversely affect the atmospheric environment. In order to obtain reliable data on the sources and pollution characteristics of VOCs and ozone in the city for precise emission reduction, the concentrations of VOCs and ozone in Xi'an city were monitored by navigation observation using both a proton transfer reaction time-of-flight mass spectrometer (PTR-TOF-MS) and differential absorption lidar. Three different functional areas were selected, including a residential area (RA), a commercial district (CD), and an industrial park (IP). The PTR-TOF-MS measurement results found total concentrations of VOCs (TVOCs) with mean values of 136 ppb, 175 ppb, and 267 ppb at RA, CD, and IP sites, respectively. The dominant category of VOCs was oxygenated VOCs (OVOCs) at all three sites, accounting for 86%, 81%, and 75% of TVOCs at the RA, CD, and IP sites, respectively. Among OVOCs and aromatic hydrocarbons (AHs), acetone and toluene were the predominant chemical species, accounting for 51% and 58% at the IP site, respectively. Propylene was the most abundant aliphatic hydrocarbon (ALH) at the RA and CD sites, accounting for 42% and 48% of the TVOCs, respectively. The average ozone formation potentials (OFP) of the measured VOCs were 546 μg/m3, 574 μg/m3, and 772 μg/m3 at the RA, CD, and IP sites, respectively; OVOCs were the dominant contributors to OFP at all three sites. Ozone concentrations were measured by differential absorption lidar, with mean values of 82 μg/m3, 92 μg/m3, and 117 μg/m3 at the RA, CD, and IP sites, respectively. Ozone concentration was correlated to VOCs concentration. Local meteorological conditions including wind speed and air pressure influenced VOCs and ozone concentrations. The assessment of the measurement results of local environmental protection departments indicated that forming relevant VOCs and ozone control policies and priority strategies should be considered in order to reduce the adverse effects of these pollutants. © 2020 Elsevier Ltd
英文关键词	Differential absorption lidar; Ozone; Pollution characteristics; PTR-TOF-MS; Volatile organic compounds
语种	英语
scopus关键词	Acetone; Aliphatic hydrocarbons; Emission control; Inductively coupled plasma; Mass spectrometers; Optical radar; Ozone; Proton transfer; Toluene; Volatile organic compounds; Wind; Atmospheric environment; Concentration monitoring; Differential absorption lidars; Environmental protection departments; Meteorological condition; Ozone formation potentials; Proton transfer reactions; Time-of-flight mass spectrometers; Air pollution; Afrotropic Ecozone; air quality; aromatic hydrocarbon; atmospheric pollution; concentration (composition); industrial emission; industrial location; lidar; ozone; volatile organic compound
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/152958
作者单位	Shandong Provincial Engineering and Technical Center of Light Manipulations & Shandong, Provincial Key Laboratory of Optics and Photonic Device, School of Physics and Electronics, Shandong Normal University, Jinan, 250014, China
推荐引用方式 GB/T 7714	Wang X.,Cai Y.,Wang J.,et al. Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar[J],2021,245.
APA	Wang X.,Cai Y.,Wang J.,&Zhao Y..(2021).Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar.Atmospheric Environment,245.
MLA	Wang X.,et al."Concentration monitoring of volatile organic compounds and ozone in Xi'an based on PTR-TOF-MS and differential absorption lidar".Atmospheric Environment 245(2021).