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DOI10.1002/2017JD026930
Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh-Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry
Wang, Xinke1; Hayeck, Nathalie2; Brueggemann, Martin2,3; Yao, Lei1; Chen, Hangfei1; Zhang, Ci1; Emmelin, Corinne2; Chen, Jianmin1,4; George, Christian2; Wang, Lin1,4
2017-11-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2017
卷号122期号:21
文章类型Article
语种英语
国家Peoples R China; France; Germany
英文摘要

Particulate matter 2.5 (PM2.5) filter samples were collected in July and October 2014 and January and April 2015 in urban Shanghai and analyzed using ultrahigh-performance liquid chromatography coupled to Orbitrap mass spectrometry. The measured chromatogram-mass spectra were processed by a nontarget screening approach to identify significant signals. In total, 810-1,510 chemical formulas of organic compounds in the negative polarity (negative electrospray ionization (ESI-)) and 860-1,790 in the positive polarity (ESI+), respectively, were determined. The chemical characteristics of organic aerosols (OAs) in Shanghai varied among different months and between daytime and nighttime. In the January samples, organics were generally richer in terms of both number and abundance, whereas those in the July samples were far lower. More CHO- (compounds containing only carbon, hydrogen, and oxygen and detected in ESI-) and CHOS- (sulfur-containing organics) were found in the daytime samples, suggesting a photochemical source, whereas CHONS- (nitrogen- and sulfur-containing organics) were more abundant in the nighttime samples, due to nocturnal nitrate radical chemistry. A significant number of monocyclic and polycyclic aromatic compounds, and nitrogen- and sulfur-containing heterocyclic compounds, were detected in all samples, indicating that biomass burning and fossil fuel combustion made important contributions to the OAs in urban Shanghai. Additionally, precursor-product pair analysis indicates that the epoxide pathway is an important formation route for organosulfates observed in Shanghai. Moreover, a similar analysis suggests that 35-57% of nitrogen-containing compounds detected in ESI+ could be formed through reactions between ammonia and carbonyls. Our study presents a comprehensive overview of OAs in urban Shanghai, which helps to understand their characteristics and sources.


英文关键词organic aerosols Orbitrap mass Spectrometry
领域气候变化
收录类别SCI-E
WOS记录号WOS:000417195500022
WOS关键词POLYCYCLIC AROMATIC-HYDROCARBONS ; ISOPRENE-DERIVED ORGANOSULFATES ; BIOMASS BURNING AEROSOLS ; RIVER DELTA REGION ; MOLECULAR CHARACTERIZATION ; ATMOSPHERIC AEROSOLS ; PARTICLE FORMATION ; BROWN CARBON ; PARTICULATE ORGANOSULFATES ; URBAN SHANGHAI
WOS类目Meteorology & Atmospheric Sciences
WOS研究方向Meteorology & Atmospheric Sciences
引用统计
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/33617
专题气候变化
作者单位1.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai, Peoples R China;
2.Univ Claude Bernard Lyon 1, Univ Lyon, CNRS, IRCELYON, Villeurbanne, France;
3.Leibniz Inst Tropospher Res, Leipzig, Germany;
4.Fudan Univ, Inst Atmospher Sci, Shanghai, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xinke,Hayeck, Nathalie,Brueggemann, Martin,et al. Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh-Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(21).
APA Wang, Xinke.,Hayeck, Nathalie.,Brueggemann, Martin.,Yao, Lei.,Chen, Hangfei.,...&Wang, Lin.(2017).Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh-Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(21).
MLA Wang, Xinke,et al."Chemical Characteristics of Organic Aerosols in Shanghai: A Study by Ultrahigh-Performance Liquid Chromatography Coupled With Orbitrap Mass Spectrometry".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.21(2017).
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