DOI: 10.1016/j.atmosenv.2017.10.036
Scopus记录号: 2-s2.0-85032197164
论文题名: Total OH reactivity measurements for the OH-initiated oxidation of aromatic hydrocarbons in the presence of NOx
作者: Sato K ; , Nakashima Y ; , Morino Y ; , Imamura T ; , Kurokawa J ; -I ; , Kajii Y
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 272
结束页码: 278
语种: 英语
英文关键词: Anthropogenic volatile organic compound
; Environmental chamber
; Photochemical oxidant
; Total OH reactivity
; Tropospheric ozone
Scopus关键词: Aromatic compounds
; Aromatization
; Environmental chambers
; Fourier transform infrared spectroscopy
; Hydrocarbons
; Nitrogen oxides
; Oxidation
; Volatile organic compounds
; 1 ,3 ,5-Trimethylbenzene
; Master chemical mechanism
; Oxidation of toluenes
; Photochemical oxidants
; Temporal variation
; Total OH reactivities
; Tropospheric ozone
; Urban environments
; Aromatic hydrocarbons
; aromatic hydrocarbon
; benzaldehyde derivative
; benzoquinone derivative
; furanone derivative
; nitric oxide
; phenol derivative
; xylene
; anthropogenic source
; aromatic hydrocarbon
; chemical analysis
; chemical property
; experimental apparatus
; hydroxyl radical
; laboratory method
; nitrous oxide
; oxidant
; oxidation
; ozone
; photochemistry
; temporal variation
; troposphere
; analytical parameters
; Article
; hydroxide reactivation
; infrared spectroscopy
; irradiation
; oxidation
; photolysis
; priority journal
; secondary organic aerosol
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: The total OH reactivity of the secondary products formed from the OH-initiated oxidation of toluene, p-xylene, and 1,3,5-trimethylbenzene was directly measured in the presence of NOx using a laboratory environmental chamber in order to investigate unidentified reactive species in urban air. The total OH reactivity was also calculated from the concentrations of the reactants and products, which were monitored by Fourier-transform infrared spectroscopy. The difference between the measured and calculated OH reactivity, the so-called missing OH reactivity, comprised 58–81% of the total OH reactivity of the secondary products. These results suggest that the secondary products formed from the oxidation of aromatic hydrocarbons may be important candidates in accounting for the missing OH reactivity in the analyses of urban environments. The Master Chemical Mechanism (MCM) calculations were performed to predict the temporal variation in the total OH reactivity for the oxidation of aromatic hydrocarbons. The MCM calculations successfully reproduced the observed total OH reactivity when the particle and semi-volatile product concentrations were negligibly low. The MCM calculations were used to identify the missing secondary products. The results suggest that important components of the missing OH reactivity are unsaturated multifunctional products such as unsaturated dicarbonyls, unsaturated epoxydicarbonyls, and furanones. © 2017 The Author(s) Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82173
Appears in Collections: 气候变化事实与影响
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作者单位: National Institute for Environmental Studies (NIES), Onogawa, Tsukuba, Ibaraki, Japan; Tokyo University of Agriculture and Technology, Saiwaicho, Fuchu, Tokyo, Japan; Asia Center for Air Pollution Research, Sowa-Nishi-ku, Niigata, Japan; Kyoto University, Yoshida-honmachi, Sakyo-ku, Kyoto, Japan
Recommended Citation:
Sato K,, Nakashima Y,, Morino Y,et al. Total OH reactivity measurements for the OH-initiated oxidation of aromatic hydrocarbons in the presence of NOx[J]. Atmospheric Environment,2017-01-01,171