Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017JD026930 |
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
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ISSN | 2169-897X |
EISSN | 2169-8996 |
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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