DOI: 10.1016/j.atmosenv.2019.117090
论文题名: Atmospheric particulate characterization by ToF-SIMS in an urban site in Beijing
作者: Zhao Y. ; Huang H. ; Zhang Y. ; Wu K. ; Zeng F. ; Wang J. ; Yu X. ; Zhu Z. ; Yu X.-Y. ; Wang F.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 220 语种: 英语
英文关键词: Air quality
; Aromatic hydrocarbons
; Atmospheric aerosols
; Atmospheric chemistry
; Carbonyl compounds
; Chemical analysis
; Meteorology
; Organic polymers
; Principal component analysis
; Quality control
; Salts
; Secondary ion mass spectrometry
; Unsaturated compounds
; Urban growth
; Volatile organic compounds
; Aerosol chemical composition
; Atmospheric particulate
; Saturated hydrocarbons
; Surface chemical composition
; Time of flight secondary ion mass spectrometry
; ToF SIMS
; Unsaturated hydrocarbons
; Urban aerosols
; Particles (particulate matter)
; alcohol derivative
; alkene
; aromatic hydrocarbon
; carbonyl derivative
; heterocyclic compound
; hydrocarbon
; inorganic salt
; nitrogen
; nitrogen dioxide
; ozone
; sulfur dioxide
; volatile organic compound
; aerosol
; air quality
; atmospheric pollution
; chemical composition
; exhalative deposit
; exhaust emission
; inorganic compound
; organic compound
; pollutant source
; principal component analysis
; public health
; urban site
; volatile organic compound
; air quality
; Article
; chemical composition
; China
; particulate matter
; principal component analysis
; priority journal
; secondary ion mass spectrometry
; temperature
; time of flight mass spectrometry
; urban area
; weather
; wind speed
; Beijing [China]
学科: Aerosol chemical composition
; Air quality
; Principal component analysis
; ToF-SIMS
; Urban aerosol
中文摘要: The chemical composition of atmospheric particulate is greatly different in air pollution in different periods or regions, which affects human health to various degrees. This work aims to establish a strategy to distinguish the aerosol samples of different air quality levels and figure out their major differences using time-of-flight secondary ion mass spectrometry (ToF-SIMS). Considering archived meteorological data and environmental data, the samples from five days were selected for analysis, representing five air quality levels: I, good; II, moderate; III, lightly polluted; IV, moderately polluted; and V, heavily polluted. ToF-SIMS results showed that the surface chemical composition of PM2.5 was complicated during haze. A large amount of inorganic salts and organic substances derived from volatile organic compounds (VOCs) were detected. Principal component analysis (PCA) was used to search for the species that have large difference under various pollution conditions. PCA showed that worse air quality is usually associated with higher proportion of organic substances on the aerosol with lower proportion of inorganic salts. The organic substances such as saturated hydrocarbons, unsaturated hydrocarbons, aromatic hydrocarbons, alcohols and carbonyls, and nitrogen-containing organics or heterocyclic compounds contributed greatly to the difference of these samples. These species were assigned and their possible sources were discussed. Our results suggested that the exhaust emissions from motor vehicles have large impact on the growth of atmospheric aerosol in urban areas of Beijing. © 2019 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/161112
Appears in Collections: 气候变化与战略
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作者单位: Beijing National Laboratory for Molecular Sciences, CAS Research/Education Center for Excellence in Molecular Sciences, CAS Key Laboratory of Analytical Chemistry for Living Biosystems, National Centre for Mass Spectrometry in Beijing, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; School of Environment & Natural Resources, Renmin University of China, Beijing, 100872, China; Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, United States; Energy and Environment Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, United States; University of Chinese Academy of Sciences, Beijing, 100049, China; Key Laboratory for Advanced Materials & School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, China; School of Physics, Shandong University, Jinan, 250100, China
Recommended Citation:
Zhao Y.,Huang H.,Zhang Y.,et al. Atmospheric particulate characterization by ToF-SIMS in an urban site in Beijing[J]. Atmospheric Environment,2020-01-01,220