globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosres.2018.10.010
Scopus ID: 2-s2.0-85056834482
Title:
Wintertime aerosol chemistry in Beijing during haze period: Significant contribution from secondary formation and biomass burning emission
Author: Li X.; Jiang L.; Bai Y.; Yang Y.; Liu S.; Chen X.; Xu J.; Liu Y.; Wang Y.; Guo X.; Wang Y.; Wang G.
Source Publication: Atmospheric Research
ISSN: 1698095
Publishing Year: 2019
Volume: 218
pages begin: 25
pages end: 33
Language: 英语
Keyword: Chemical compositions ; Haze ; Organic tracers ; PM 2.5 ; Source apportionment
Scopus Keyword: Aerosols ; Air pollution ; Biomass ; Coal dust ; Fatty acids ; Industrial emissions ; Organic carbon ; Paraffins ; Polycyclic aromatic hydrocarbons ; Sugars ; Trace elements ; Chemical compositions ; Haze ; Organic tracers ; PM2.5 ; Source apportionment ; Coal combustion ; aerosol composition ; biomass burning ; emission ; haze ; particulate matter ; source apportionment ; tracer ; winter ; Beijing [China] ; China
English Abstract: Air pollution in north China is still severe, although Chinese government has exerted great efforts to cut down pollutant emissions in the past decade. To understand the chemistry and sources of the haze particles in north China, PM 2.5 aerosols were collected in Beijing from January 7 to February 27, 2014, during which two haze episodes (haze I and haze II) occurred. The samples were analyzed for water soluble inorganic ions, trace elements, sugars, n-alkane, polycyclic aromatic hydrocarbons (PAHs), fatty acids, dicarboxylic acid, EC (elemental carbon) and OC (organic carbon). Our results showed that relative abundances of primary species such as sugars, PAHs and EC were more abundant on the clean days and the haze I period in Beijing, while secondary aerosols especially secondary inorganic aerosol (SIA)were more abundant in the haze II period. Source apportionment further showed that emissions from cooking (21.6%), road-dust (19.4%), coal combustion (17.8%) and biomass burning (15.4%) were the main sources of PM 2.5 during the clean days, while biomass burning (20.1%) and coal combustion (17.1%) were the main sources during haze I period. For the haze II period, vehicle exhausts (26.9%), secondary aerosol formation (26.6%) and industrial emission (19.1%) were the dominant sources of PM 2.5 . Our work suggests that it is indispensable to reduce the emissions from biomass burning and vehicle exhaust in Beijing in order to further mitigate the haze pollution. © 2018
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被引频次[WOS]:1   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/122356
Appears in Collections:气候变化事实与影响

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Affiliation: Key Laboratory of Geographic Information Science of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241, China; Department of Chemistry, Analytical and Testing Center, Capital Normal University, Beijing, 100048, China; College of Resource Environment and Tourism, Capital Normal University, Beijing, 100048, China; Beijing Municipal Research Institute of Environmental Protection, Beijing, 100037, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Key Laboratory of Geoscience Information of the Ministry of Education, School of Geographic Sciences, East China Normal University, Shanghai, 200241, China

Recommended Citation:
Li X.,Jiang L.,Bai Y.,et al. Wintertime aerosol chemistry in Beijing during haze period: Significant contribution from secondary formation and biomass burning emission[J]. Atmospheric Research,2019-01-01,218
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