DOI: 10.1016/j.atmosenv.2014.01.057
Scopus记录号: 2-s2.0-84895740130
论文题名: UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds
作者: Al Rashidi M ; , El Masri A ; , Roth E ; , Chakir A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 88 起始页码: 261
结束页码: 268
语种: 英语
英文关键词: Atmospheric life-times
; Cross section
; Degradation mechanism
; FTIR spectroscopy
; Kinetic
; Morpholine
; OH-radicals
; UV spectra
Scopus关键词: Degradation
; Free radicals
; Kinetics
; Photolysis
; Rate constants
; Reaction kinetics
; Spectrometers
; Ultraviolet spectroscopy
; Cross section
; Degradation mechanism
; FTIR spectroscopy
; Life-times
; Morpholines
; OH-radicals
; UV spectrum
; Fourier transform infrared spectroscopy
; amide
; amine
; benzaldehyde
; isoprene
; morpholine derivative
; n acetlymorpholine
; n formylmorpholine
; unclassified drug
; adsorption
; estimation method
; FTIR spectroscopy
; isoprene
; oxidation
; reaction kinetics
; spectral analysis
; troposphere
; ultraviolet radiation
; wavelength
; absorption
; article
; chemical reaction
; controlled study
; degradation kinetics
; experimental study
; gas
; infrared spectroscopy
; oxidation kinetics
; photolysis
; priority journal
; reactor
; structure activity relation
; troposphere
; ultraviolet spectroscopy
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 paper presents an experimental study of the UV spectra as well as the kinetics of gaseous phase OH-oxidation of morpholine, N-formylmorpholine (NFM) and N-acetlymorpholine (NAM). The spectra recorded using a UV spectrometer in the spectral range 200-280nm show that the analytes mainly absorb at wavelengths less than 280nm. This indicates that their photolysis potential in the troposphere is insignificant. Meanwhile, the OH-reactivity of these analytes was studied using a triple-jacket 2m long reactor equipped with a multi-reflection system and coupled to an FTIR spectrometer. The experiments were carried out at 295 and 313K for the amine and amides, respectively. The study was conducted in the relative mode using isoprene and benzaldehyde as reference compounds. The rate constants obtained are 14.0±1.9, 4.0±1.1 and 3.8±1.0 (in units of 10-11cm3molecule-1s-1) for morpholine, NFM and NAM respectively. These results are discussed in terms of reactivity and compared to those obtained for other oxy-nitrogenated species. In addition, the determined rate constants are used to estimate effective atmospheric lifetimes of the investigated morpholinic compounds with respect to reaction with OH radicals. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81005
Appears in Collections: 气候变化事实与影响
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作者单位: Université de Reims, Laboratoire GSMA, Campus Moulin de la Housse, BP 1039, 51687 Reims cedex 02, France; CNRS, Laboratoire GSMA-UMR 6089, UFR Sciences, BP 1039, 51687 Reims cedex 02, France; Clean Combustion Research Center, King Abdulla University of Science and Technology, Thuwal, Saudi Arabia
Recommended Citation:
Al Rashidi M,, El Masri A,, Roth E,et al. UV spectra and OH-oxidation kinetics of gaseous phase morpholinic compounds[J]. Atmospheric Environment,2014-01-01,88