Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-4055-2018 |
Primary and secondary organic aerosols in summer 2016 in Beijing | |
Tang, Rongzhi1; Wu, Zepeng1; Li, Xiao1; Wang, Yujue1; Shang, Dongjie1; Xiao, Yao1; Li, Mengren1; Zeng, Limin1; Wu, Zhijun1; Hallquist, Mattias2; Hu, Min1; Guo, Song1 | |
2018-03-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:6页码:4055-4068 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Sweden |
英文摘要 | To improve air quality, the Beijing government has employed several air pollution control measures since the 2008 Olympics. In order to investigate organic aerosol sources after the implementation of these measures, ambient fine particulate matter was collected at a regional site in Changping (CP) and an urban site at the Peking University Atmosphere Environment Monitoring Station (PKUERS) during the "Photochemical Smog in China" field campaign in summer 2016. Chemical mass balance (CMB) modeling and the tracer yield method were used to apportion primary and secondary organic sources. Our results showed that the particle concentration decreased significantly during the last few years. The apportioned primary and secondary sources explained 62.8 +/- 18.3 and 80.9 +/- 27.2% of the measured OC at CP and PKUERS, respectively. Vehicular emissions served as the dominant source. Except for gasoline engine emissions, the contributions of all the other primary sources decreased. In addition, the anthropogenic SOC, i.e., toluene SOC, also decreased, implying that deducting primary emissions can reduce anthropogenic SOA. In contrast to the SOA from other regions in the world where biogenic SOA was dominant, anthropogenic SOA was the major contributor to SOA, implying that deducting anthropogenic VOC emissions is an efficient way to reduce SOA in Beijing. Back-trajectory cluster analysis results showed that high mass concentrations of OC were observed when the air mass was from the south. However, the contributions of different primary organic sources were similar, suggesting regional particle pollution. The ozone concentration and temperature correlated well with the SOA concentration. Different correlations between day and night samples suggested different SOA formation pathways. Significant enhancement of SOA with in-creasing particle water content and acidity was observed in our study, suggesting that aqueous-phase acid-catalyzed reactions may be the important SOA formation mechanism in summer in Beijing. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445914200001 |
WOS关键词 | FINE PARTICULATE MATTER ; SOURCE APPORTIONMENT ; AIR-POLLUTION ; ALPHA-PINENE ; ANTHROPOGENIC HYDROCARBONS ; CHEMICAL-CHARACTERIZATION ; SEASONAL-VARIATIONS ; MOLECULAR TRACERS ; PM2.5 ; URBAN |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/25022 |
专题 | 地球科学 |
作者单位 | 1.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100871, Peoples R China; 2.Univ Gothenburg, Dept Chem & Mol Biol, Atmospher Sci, Gothenburg, Sweden |
推荐引用方式 GB/T 7714 | Tang, Rongzhi,Wu, Zepeng,Li, Xiao,et al. Primary and secondary organic aerosols in summer 2016 in Beijing[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(6):4055-4068. |
APA | Tang, Rongzhi.,Wu, Zepeng.,Li, Xiao.,Wang, Yujue.,Shang, Dongjie.,...&Guo, Song.(2018).Primary and secondary organic aerosols in summer 2016 in Beijing.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(6),4055-4068. |
MLA | Tang, Rongzhi,et al."Primary and secondary organic aerosols in summer 2016 in Beijing".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.6(2018):4055-4068. |
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