DOI: 10.1016/j.atmosenv.2017.11.035
Scopus记录号: 2-s2.0-85039154017
论文题名: Cloud condensation nuclei activity and hygroscopicity of fresh and aged cooking organic aerosol
作者: Li Y ; , Tasoglou A ; , Liangou A ; , Cain K ; P ; , Jahn L ; , Gu P ; , Kostenidou E ; , Pandis S ; N
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 176 起始页码: 103
结束页码: 109
语种: 英语
英文关键词: CCN
; Chemical aging
; Cooking aerosol
; Hygroscopicity
; Particle shape
Scopus关键词: Chemical activation
; Condensation
; Solubility
; Average mobility
; Chemical aging
; Cloud condensation nuclei
; Hygroscopicity
; Organic aerosol
; Organic particulate matters
; Particle shape
; Water solubilities
; Aerosols
; ozone
; activation energy
; aerosol
; cloud condensation nucleus
; experimental study
; human activity
; hygroscopicity
; organic compound
; particle size
; particulate matter
; saturation
; ultraviolet radiation
; urban area
; aerosol
; aging
; Article
; cloud
; cooking organic aerosol
; particle size
; particulate matter
; priority journal
; solubility
; surface tension
; ultraviolet radiation
; uncertainty
; urban area
; wettability
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: Cooking organic aerosol (COA) is potentially a significant fraction of organic particulate matter in urban areas. COA chemical aging experiments, using aerosol produced by grilling hamburgers, took place in a smog chamber in the presence of UV light or excess ozone. The water solubility distributions, cloud condensation nuclei (CCN) activity, and corresponding hygroscopicity of fresh and aged COA were measured. The average mobility equivalent activation diameter of the fresh particles at 0.4% supersaturation ranged from 87 to 126 nm and decreased for aged particles, ranging from 65 to 88 nm. Most of the fresh COA had water solubility less than 0.1 g L−1, even though the corresponding particles were quite CCN active. After aging, the COA fraction with water solubility greater than 0.1 g L−1 increased more than 2 times. Using the extended Köhler theory for multiple partially soluble components in order to predict the measured activation diameters, the COA solubility distribution alone could not explain the CCN activity. Surface tensions less than 30 dyn cm−1 were required to explain the measured activation diameters. In addition, COA particles appear to not be spherical, which can introduce uncertainties into the corresponding calculations. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83024
Appears in Collections: 气候变化事实与影响
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作者单位: Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing, China; Center for Atmospheric Particle Studies, Carnegie Mellon University, Pittsburgh, United States; Department of Chemical Engineering, University of Patras, Patra, Greece; Institute of Chemical Engineering Sciences (ICE-HT), FORTH, Patra, Greece; RJ Lee Group, Inc., Monroeville, United States
Recommended Citation:
Li Y,, Tasoglou A,, Liangou A,et al. Cloud condensation nuclei activity and hygroscopicity of fresh and aged cooking organic aerosol[J]. Atmospheric Environment,2018-01-01,176