DOI: 10.1016/j.atmosenv.2014.11.069
Scopus记录号: 2-s2.0-84917680643
论文题名: Connection of organics to atmospheric new particle formation and growth at an urban site of Beijing
作者: Wang Z ; B ; , Hu M ; , Pei X ; Y ; , Zhang R ; Y ; , Paasonen P ; , Zheng J ; , Yue D ; L ; , Wu Z ; J ; , Boy M ; , Wiedensohler A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 7
结束页码: 17
语种: 英语
英文关键词: New particle formation
; Organic vapor
; Particle growth
; Sulfuric acid
Scopus关键词: Nucleation
; Sulfur determination
; Sulfuric acid
; Ambient measurement
; Homogenous nucleation
; New particle formation
; Nucleation mode particles
; Organic vapors
; Particle growth
; Particle nucleation
; Positive correlations
; Urban growth
; isoprene
; organic compound
; ozone
; sulfuric acid
; terpene
; ambient air
; atmospheric pollution
; nucleation
; organic matter
; sulfuric acid
; urban area
; urban atmosphere
; vapor pressure
; Article
; atmosphere
; light intensity
; molecule
; oxidation
; particle size
; particulate matter
; urban area
; vapor
; Beijing [China]
; China
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In the present work, we aim to elucidate the roles of low-volatility organic vapors in atmospheric new particle formation in urban Beijing. Proposed organic molecules are derived from both the ambient measurement and the reasonable proxy. Several representations for the nucleation theories involving sulfuric acid and organic vapors are evaluated. The particle nucleation rates show good correlations both with sulfuric acid and organic vapors, suggesting that both play an important role in the atmospheric new particle formation. For the entire data set, the best fit (R=0.79, slope=1.1) between the observed and modeled particle nucleation rates is achieved with the homogenous nucleation theory of sulfuric acid (both homomolecularly and heteromolecularly) with separate coefficients in J=KSA1[H2SO4]2+KSA2[H2SO4][Org]. In addition, sulfuric acid concentration only contributes a small fraction (<15%) to the total observed growth rate. The growth rates of 7-30nm particles show positive correlation with the organic vapors oxidized by ozone, suggesting that particle nucleation may be controlled by the light intensity or OH concentration, while the growth of nucleation mode particles seems to be limited more by the concentrations of the organic precursors. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82020
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Joint Laboratory of Environmental Simulation and Pollution Control, College of Environmental Sciences and Engineering, Peking University, Beijing, China; Leibniz Institute for Tropospheric Research, Leipzig, Germany; Department of Chemistry and Molecular Biology, Atmospheric Science, University of Gothenburg, Gothenburg, Sweden; Department of Atmospheric Science, Texas A and M UniversityTX, United States; Department of Physics, University of Helsinki, Helsinki, Finland; International Institute for Applied Systems Analysis, Laxenburg, Austria
Recommended Citation:
Wang Z,B,, Hu M,et al. Connection of organics to atmospheric new particle formation and growth at an urban site of Beijing[J]. Atmospheric Environment,2015-01-01,103