UHPLC-Orbitrap mass spectrometric characterization of organic aerosol from a central European city (Mainz, Germany) and a Chinese megacity (Beijing)

doi:10.1016/j.atmosenv.2018.06.036

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	UHPLC-Orbitrap mass spectrometric characterization of organic aerosol from a central European city (Mainz, Germany) and a Chinese megacity (Beijing)
	Hoffman, T (Hoffman, Thorsten)[ 1 ]; Cao, JJ (Cao, Junji)[ 2 ]; Huang, RJ (Huang, Ru-Jin)[ 2 ]; Zhang, Y (Zhang, Yun)[ 1 ]; Wang, K (Wang, Kai)[ 1,2 ]
刊名	Atmospheric Environment
	2018-09
卷号	189 页码:22-29
关键词	Organic aerosol Orbitrap MS UHPLC Megacity Molecular characterization
DOI	10.1016/j.atmosenv.2018.06.036
文献子类	期刊论文
英文摘要	Fine urban aerosol particles with aerodynamic equivalent dimeter ≤2.5 μm (PM2.5) were collected in Mainz (a city within the Rhine-Main area, the third largest metropolitan region in Germany) and Beijing (Chinese megacity). A solvent mixture of acetonitrile-water was used to extract the organic aerosol fraction (OA) from the particle samples. The extracts were analyzed by an ultrahigh resolution mass spectrometer (UHRMS) Orbitrap coupled with ultra-high-performance liquid chromatography (UHPLC) both in the negative and positive ion mode. The number of compounds observed in Beijing is a factor of 2–10 higher compared to Mainz. The clear differences on chemical composition of OA in the two cities were observed. The majority of organics in Beijing OA is characterized by lower elemental H/C and O/C ratio but a higher degree of unsaturation and a larger aromaticity equivalent (XC) compared to Mainz OA, suggesting that aromatics, which are related to direct combustion compounds (e.g., oxidized polycyclic aromatic hydrocarbon (PAH)), play an important role for OA in Beijing. A significant number of organosulfates (OSs) with long-carbon chain and low degree of unsaturation were observed in Beijing OA, indicating that long-chain alkanes emitted by vehicle might be their precursors.
语种	英语
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/9652]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
作者单位	1.Key Lab of Aerosol Chemistry and Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, 710061, China 2.Institute of Inorganic and Analytical Chemistry, Johannes Gutenberg University of Mainz, Duesbergweg 10–14, 55128, Mainz, Germany;
推荐引用方式 GB/T 7714	Hoffman, T ,Cao, JJ ,Huang, RJ ,et al. UHPLC-Orbitrap mass spectrometric characterization of organic aerosol from a central European city (Mainz, Germany) and a Chinese megacity (Beijing)[J]. Atmospheric Environment,2018,189:22-29.
APA	Hoffman, T ,Cao, JJ ,Huang, RJ ,Zhang, Y ,&Wang, K .(2018).UHPLC-Orbitrap mass spectrometric characterization of organic aerosol from a central European city (Mainz, Germany) and a Chinese megacity (Beijing).Atmospheric Environment,189,22-29.
MLA	Hoffman, T ,et al."UHPLC-Orbitrap mass spectrometric characterization of organic aerosol from a central European city (Mainz, Germany) and a Chinese megacity (Beijing)".Atmospheric Environment 189(2018):22-29.