DOI: 10.1016/j.atmosenv.2013.11.009
Scopus记录号: 2-s2.0-84890187311
论文题名: Secondary organic aerosol formation initiated from reactions between ozone and surface-sorbed squalene
作者: Wang C ; , Waring M ; S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 84 起始页码: 222
结束页码: 229
语种: 英语
英文关键词: Aerosol mass fraction
; Fine and ultrafine particles
; Indoor air chemistry
; Ozone
; Squalene
Scopus关键词: Aerosols
; Experiments
; Ozone
; Aerosol concentration
; Aerosol mass
; Fine and ultrafine particles
; High air exchange rate
; Indoor air chemistry
; Non-volatile compounds
; Secondary organic aerosols
; Squalene
; Surface reactions
; glass
; limonene
; ozone
; squalene
; aerosol composition
; glass
; indoor air
; nucleation
; ozone
; particle size
; relative humidity
; size distribution
; article
; desquamation
; friction
; humidity
; oxidation
; priority journal
; secondary organic aerosol
; steady state
; surface property
; velocity
; water vapor
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: Previous research has shown that ozone reactions on surface-sorbed d-limonene can promote gas phase secondary organic aerosol (SOA) formation indoors. In this work, we conducted 13 steady state chamber experiments to measure the SOA formation entirely initiated by ozone reactions with squalene sorbed to glass, at chamber ozone of 57-500ppb for two relative humidity (RH) conditions of 21% and 51%, in the absence of seed particles. Squalene is a nonvolatile compound that is a component of human skin oil and prevalent on indoor surfaces and in settled dust due to desquamation. The size distributions, mass and number secondary emission rates (SER), aerosol mass fractions (AMF), and aerosol number fractions (ANF) of formed SOA were quantified. The surface AMF and ANF are defined as the change in SOA mass or number formed, respectively, per ozone mass consumed by ozone-squalene reactions. All experiments but one exhibited nucleation and mass formation. Mass formation was relatively small in magnitude and increased with ozone, most notably for the RH=51% experiments. The surface AMF was a function of the chamber aerosol concentration, and a multi-product model was fit using the 'volatility basis set' framework. Number formation was relatively strong at low ozone and low RH conditions. Though we cannot extrapolate our results because experiments were conducted at high air exchange rates, we speculate that this process may enhance particle number more than mass concentrations indoors. © 2013 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80943
Appears in Collections: 气候变化事实与影响
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作者单位: Drexel University, Department of Civil, Architectural and Environmental Engineering, 3141 Chestnut St., Philadelphia, PA 19104, United States
Recommended Citation:
Wang C,, Waring M,S. Secondary organic aerosol formation initiated from reactions between ozone and surface-sorbed squalene[J]. Atmospheric Environment,2014-01-01,84