DOI: 10.1016/j.atmosenv.2017.10.021
Scopus记录号: 2-s2.0-85031767026
论文题名: Atmospheric degradation of 2- nitrobenzaldehyde: Photolysis and reaction with OH radicals
作者: Bouya H ; , Al Rashidi M ; , Roth E ; , Salghi R ; , Chakir A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 171 起始页码: 221
结束页码: 228
语种: 英语
英文关键词: 2-Nitrobenzaldehyde
; Kinetics
; Mechanism
; OH radicals
; Photolysis
; Rate coefficient
; Tropospheric lifetimes
; UV absorption cross-sections
Scopus关键词: Degradation
; Dissociation
; Enzyme kinetics
; Fourier transform infrared spectroscopy
; Free radicals
; Kinetics
; Mechanisms
; Oxidation
; Photolysis
; Potash
; Temperature distribution
; Troposphere
; Ultraviolet spectroscopy
; 2-nitrobenzaldehyde
; OH radical
; Rate coefficients
; Tropospheric lifetime
; UV absorption
; Photodegradation
; hydroxyl radical
; absorption
; aldehyde
; degradation
; gas chromatography
; hydroxyl radical
; mass spectrometry
; oxidation
; photolysis
; reaction kinetics
; spectrometer
; ultraviolet radiation
; absorption
; absorption spectroscopy
; Article
; controlled study
; degradation
; dissociation constant
; experimental study
; gas
; kinetics
; optical density
; oxidation
; oxidation kinetics
; photolysis
; pressure measurement
; priority journal
; quantum yield
; reaction analysis
; temperature dependence
; troposphere
; vapor pressure
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: This work presents an experimental study of the gas phase kinetics of 2-nitrobenzaldehyde (2-NBA) photolysis and oxidation by OH radicals. The experiments were carried out in an atmospheric simulation chamber coupled to an FTIR spectrometer and CG/MS. The UV spectra of 2-NBA were also measured and the experimentally determined absorption cross sections were used to estimate the atmospheric photo-dissociation constant of 2-NBA with a global quantum yield of 0.5. The obtained results indicate that 2-NBA is a highly photolysable. A mechanism of 2-NBA photolysis was proposed based on the identification of photolysis degradation products. The kinetics of oxidation of 2-NBA by OH radicals was investigated over the temperature range 308–352 K. The obtained rate coefficients exhibits slight negative temperature dependence and the Arrhenius expression obtained is as follows: kOH+2-NBA(T)= (7.00 ± 3.40) × 10−12exp (577 ± 156/T) cm3 molecule−1 s−1. The calculated rate coefficients lead to tropospheric lifetimes of 2-NBA that are in the order of a few minutes, relative to photolysis, or a few hours, relative to oxidation by OH radicals. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82181
Appears in Collections: 气候变化事实与影响
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作者单位: Groupe de Spectrométrie Moléculaire et Atmosphérique (GSMA), UMR CNRS 7331, Université Reims Champagne -Ardenne, Moulin de la Housse, Reims, France; Laboratoire Mécanique, Procédé de l'Energie e de l'Environnement (LMPEE) Ecole Nationale des Sciences Appliquées d'Agadir, Agadir, Morocco; Department of Chemistry, College of Science, University of Sharjah, P. O. Box, Sharjah, United Arab Emirates
Recommended Citation:
Bouya H,, Al Rashidi M,, Roth E,et al. Atmospheric degradation of 2- nitrobenzaldehyde: Photolysis and reaction with OH radicals[J]. Atmospheric Environment,2017-01-01,171