DOI: 10.1016/j.atmosenv.2014.06.026
Scopus记录号: 2-s2.0-84902655961
论文题名: Aqueous oxidation of green leaf volatiles by hydroxyl radical as a source of SOA: Kinetics and SOA yields
作者: Richards-Henderson N ; K ; , Hansel A ; K ; , Valsaraj K ; T ; , Anastasio C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 95 起始页码: 105
结束页码: 112
语种: 英语
英文关键词: Biogenic volatile organic compounds
; Chemical kinetics
; Multiphase chemistry
; Secondary organic aerosol
Scopus关键词: Activation energy
; Aerosols
; Oxidation
; Rate constants
; Reaction kinetics
; Stresses
; Vegetation
; Biogenic volatile organic compounds
; Diffusion controlled
; Green leaf volatiles
; Henry's Law constant
; Oxygenated hydrocarbon
; Second-order rate constants
; Secondary organic aerosols
; Temperature dependence
; Kinetics
; green leaf volatile
; hydroxyl radical
; jasmonic acid methyl ester
; salicylic acid methyl ester
; unclassified drug
; volatile organic compound
; activation energy
; aerosol
; droplet
; fog
; hydroxyl radical
; leaf
; oxidation
; reaction kinetics
; article
; chemical reaction kinetics
; controlled study
; mechanical stress
; molecular weight
; nonhuman
; oxidation kinetics
; priority journal
; reaction analysis
; secondary organic aerosol
; steady state
; temperature dependence
; vegetation
; water content
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: Green leaf volatiles (GLVs) are a class of oxygenated hydrocarbons released from vegetation, especially during mechanical stress or damage. The potential for GLVs to form secondary organic aerosol (SOA) via aqueous-phase reactions is not known. Fog events over vegetation will lead to the uptake of GLVs into water droplets, followed by aqueous-phase reactions with photooxidants such as the hydroxyl radical (OH). In order to determine if the aqueous oxidation of GLVs by OH can be a significant source of secondary organic aerosol, we studied the partitioning and reaction of five GLVs: cis-3-hexen-1-ol, cis-3-hexenyl acetate, methyl salicylate, methyl jasmonate, and 2-methyl-3-butene-2-ol. For each GLV we measured the kinetics of aqueous oxidation by OH, and the corresponding SOA mass yield. The second-order rate constants for GLVs with OH were all near diffusion controlled, (5.4-8.6)×109M-1s-1 at 298K, and showed a small temperature dependence, with an average activation energy of 9.3kJmol-1 Aqueous-phase SOA mass yields ranged from 10 to 88%, although some of the smaller values were not statistically different from zero. Methyl jasmonate was the most effective aqueous-phase SOA precursor due to its larger Henry's law constant and high SOA mass yield (68±8%). While we calculate that the aqueous-phase SOA formation from the five GLVs is a minor source of aqueous-phase SOA, the availability of other GLVs, other oxidants, and interfacial reactions suggest that GLVs overall might be a significant source of SOA via aqueous reactions. © 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80841
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Land, Air and Water Resources, University of California - Davis, 1 Shields Ave., Davis, CA 95616, United States; Cain Department of Chemical Engineering, Louisiana State University, South Stadium Road, Baton Rouge, LA 70803, United States
Recommended Citation:
Richards-Henderson N,K,, Hansel A,et al. Aqueous oxidation of green leaf volatiles by hydroxyl radical as a source of SOA: Kinetics and SOA yields[J]. Atmospheric Environment,2014-01-01,95