DOI: 10.1016/j.atmosenv.2017.10.011
Scopus记录号: 2-s2.0-85031720414
论文题名: Formation of secondary aerosols from the ozonolysis of styrene: Effect of SO2 and H2O
作者: Díaz-de-Mera Y ; , Aranda A ; , Martínez E ; , Rodríguez A ; A ; , Rodríguez D ; , Rodríguez A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 25
结束页码: 31
语种: 英语
英文关键词: Ozone
; SO2
; SOA
; Styrene
Scopus关键词: Aerosols
; Atmospheric humidity
; Atmospheric pressure
; Ozone
; Rate constants
; Reaction intermediates
; Styrene
; Atmospheric conditions
; Criegee intermediates
; High capacity
; Low concentrations
; Particulate Matter
; Reaction conditions
; Secondary aerosols
; Synthetic air
; Atmospheric aerosols
; ozone
; politef
; styrene
; sulfur dioxide
; sulfuric acid
; water
; aerosol
; atmospheric pressure
; chemical compound
; ozone
; particulate matter
; smog
; sulfur dioxide
; temperature effect
; aerosol
; air pollution
; Article
; atmospheric pressure
; humidity
; ozonolysis
; particulate matter
; priority journal
; room temperature
; smog
; 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: In this work we report the study of the ozonolysis of styrene and the reaction conditions leading to the formation of secondary aerosols. The reactions have been carried out in a Teflon chamber filled with synthetic air mixtures at atmospheric pressure and room temperature. We have found that the ozonolysis of styrene in the presence of low concentrations of SO2 readily produces new particles under concentrations of reactants lower than those required in experiments in the absence of SO2. Thus, nucleation events occur at concentrations around (5.6 ± 1.7)×108molecule cm−3 (errors are 2σ±20%) and SO2 is consumed during the experiments. The reaction of the Criegee intermediates with SO2 to produce SO3 and then H2SO4 may explain (together with OH reactions’ contribution) the high capacity of styrene to produce particulate matter in polluted atmospheres. The formation of secondary aerosols in the smog chamber is inhibited under high H2O concentrations. So, the potential formation of secondary aerosols under atmospheric conditions depends on the concentration of SO2 and relative humidity, with a water to SO2 rate constants ratio kH2O/kSO2= (2.8 ± 0.7) × 10−5 (errors are 2σ±20%). © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82180
Appears in Collections: 气候变化事实与影响
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作者单位: Universidad de Castilla-La Mancha, Facultad de Ciencias y Tecnologias Quimicas, Avenida Camilo José Cela s/n, Ciudad Real, Spain; Universidad de Castilla-La Mancha, Instituto de Investigación en Combustión y Contaminación Atmosférica, Camino Moledores, s/n, Ciudad Real, Spain; Universidad de Castilla-La Mancha, Facultad de Ciencias Ambientales y Bioquímica, Avenida Carlos III s/n, Toledo, Spain
Recommended Citation:
Díaz-de-Mera Y,, Aranda A,, Martínez E,et al. Formation of secondary aerosols from the ozonolysis of styrene: Effect of SO2 and H2O[J]. Atmospheric Environment,2017-01-01,171