气候变化领域集成服务门户(CCPortal): Chemical characterization of oxygenated organic compounds in the gas phase and particle phase using iodide CIMS with FIGAERO in urban air

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DOI	10.5194/acp-21-8455-2021
	Chemical characterization of oxygenated organic compounds in the gas phase and particle phase using iodide CIMS with FIGAERO in urban air
	Ye C.; Yuan B.; Lin Y.; Wang Z.; Hu W.; Li T.; Chen W.; Wu C.; Wang C.; Huang S.; Qi J.; Wang B.; Wang C.; Song W.; Wang X.; Zheng E.; Krechmer J.E.; Ye P.; Zhang Z.; Wang X.; Worsnop D.R.; Shao M.
发表日期	2021
ISSN	1680-7316
起始页码	8455
结束页码	8478
卷号	21 期号:11
英文摘要	The atmospheric processes under polluted environments involving interactions of anthropogenic pollutants and natural emissions lead to the formation of various and complex secondary products. Therefore, the characterization of oxygenated organic compounds in urban areas remains a pivotal issue in our understanding of the evolution of organic carbon. Here, we describe measurements of an iodide chemical ionization time-of-flight mass spectrometer installed with a Filter Inlet for Gases and AEROsols (FIGAERO-I-CIMS) in both the gas phase and the particle phase at an urban site in Guangzhou, a typical megacity in southern China, during the autumn of 2018. Abundant oxygenated organic compounds containing two to five oxygen atoms were observed, including organic acids, multi-functional organic compounds typically emitted from biomass burning, oxidation products of biogenic hydrocarbons and aromatics. Photochemistry played dominant roles in the formation of gaseous organic acids and isoprene-derived organic nitrates, while nighttime chemistry contributed significantly to the formation of monoterpene-derived organic nitrates and inorganics. Nitrogen-containing organic compounds occupied a significant fraction of the total signal in both the gas and particle phases, with elevated fractions at higher molecular weights. Measurements of organic compounds in the particle phase by FIGAERO-I-CIMS explained 24 ± 0.8 % of the total organic aerosol mass measured by aerosol mass spectrometer (AMS), and the fraction increased for more aged organic aerosol. The systematical interpretation of mass spectra of the FIGAERO-I-CIMS in the urban area of Guangzhou provides a holistic view of numerous oxygenated organic compounds in the urban atmosphere, which can serve as a reference for the future field measurements by FIGAERO-I-CIMS in polluted urban regions. © 2021 Chenshuo Ye et al.
语种	英语
scopus关键词	aerosol; air quality; atmospheric chemistry; atmospheric gas; iodide; mass spectrometry; organic compound; oxygen; urban atmosphere; China; Guangdong; Guangzhou
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246839
作者单位	College of Environmental Sciences and Engineering, Peking University, Beijing, 100871, China; Institute for Environmental and Climate Research, Jinan University, Guangzhou, 511443, China; Guangdong-Hong Kong-Macau Joint Laboratory of Collaborative Innovation for Environmental Quality, Guangzhou, 511443, China; Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 511443, China; School of Environmental Science and Engineering, Qilu University of Technology, Jinan, 250353, China; Aerodyne Research Inc., 45 Manning Rd., Billerica, MA, United States; Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP), Department of Environmental Science and Engineering, Fudan University, Shanghai, 200438, China
推荐引用方式 GB/T 7714	Ye C.,Yuan B.,Lin Y.,et al. Chemical characterization of oxygenated organic compounds in the gas phase and particle phase using iodide CIMS with FIGAERO in urban air[J],2021,21(11).
APA	Ye C..,Yuan B..,Lin Y..,Wang Z..,Hu W..,...&Shao M..(2021).Chemical characterization of oxygenated organic compounds in the gas phase and particle phase using iodide CIMS with FIGAERO in urban air.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(11).
MLA	Ye C.,et al."Chemical characterization of oxygenated organic compounds in the gas phase and particle phase using iodide CIMS with FIGAERO in urban air".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.11(2021).