DOI: 10.1002/grl.50455
论文题名: Adsorption of organic molecules may explain growth of newly nucleated clusters and new particle formation
作者: Wang J. ; Wexler A.S.
刊名: Geophysical Research Letters
ISSN: 0094-8976
EISSN: 1944-8707
出版年: 2013
卷: 40, 期: 11 起始页码: 2834
结束页码: 2838
语种: 英语
英文关键词: adsorption
; initial particle growth
; Kelvin effect
; new particle formation
Scopus关键词: Adsorption of organic molecules
; Homogeneous nucleation
; Kelvin effect
; New particle formation
; Nucleated clusters
; Partial Molar volume
; Particle growth
; Thermodynamically stable
; Condensation
; Molecules
; Vapors
; Adsorption
; adsorption
; cluster analysis
; condensation
; nucleation
; physicochemical property
; thermodynamics
; vapor pressure
; volatile organic compound
英文摘要: New particle formation consists of homogeneous nucleation of thermodynamically stable clusters followed by growth of these clusters to a detectable size. For new particle formation to take place, these clusters need to grow sufficiently fast to escape coagulation with preexisting particles. Previous studies indicated that condensation of low-volatility organic vapor may play an important role in the initial growth of the clusters. However, due to the relatively high vapor pressure and partial molar volume of even highly oxidized organic compounds, the strong Kelvin effect may prevent typical ambient organics from condensing on these small clusters. Here we show that the adsorption of organic molecules onto the surface of clusters, not considered previously, may significantly reduce the saturation ratio required for the condensation of organics to occur and therefore may provide a physicochemical explanation for the enhanced initial growth by condensation of organics despite the strong Kelvin effect. © 2013 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879892356&doi=10.1002%2fgrl.50455&partnerID=40&md5=3771dbcf7df9efb707bde6cfd88c20bc
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6240
Appears in Collections: 气候减缓与适应
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作者单位: Atmospheric Science Division, Brookhaven National Laboratory, Upton, NY 11973, United States
Recommended Citation:
Wang J.,Wexler A.S.. Adsorption of organic molecules may explain growth of newly nucleated clusters and new particle formation[J]. Geophysical Research Letters,2013-01-01,40(11).