DOI: 10.1016/j.atmosenv.2017.12.027
Scopus记录号: 2-s2.0-85039844329
论文题名: Analysis of reaction products formed in the gas phase reaction of E,E-2,4-hexadienal with atmospheric oxidants: Reaction mechanisms and atmospheric implications
作者: Colmenar I ; , Martin P ; , Cabañas B ; , Salgado S ; , Martinez E
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 176 起始页码: 188
结束页码: 200
语种: 英语
英文关键词: Atmospheric oxidants
; E,E-2,4-hexadienal
; E/Z-butenedial
; Nitrate compounds
; Particulate matter
; Reaction products
Scopus关键词: Carbon
; Carbonyl compounds
; Chemical reactions
; Fourier transform infrared spectroscopy
; Gas chromatography
; Mass spectrometry
; Nitrates
; Oxidants
; Phase interfaces
; Reaction products
; Troposphere
; Unsaturated compounds
; Atmospheric implications
; Atmospheric oxidants
; Gas chromatography-mass spectrometry
; Gas-phase reactions
; Multifunctional compounds
; Particulate Matter
; Time of flight detectors
; Unsaturated carbonyl compounds
; Gases
; aldehyde
; carbon
; formaldehyde
; glyoxal
; hydroxyl radical
; maleic anhydride
; nitrate
; oxidizing agent
; radical
; water
; aldehyde
; atmospheric chemistry
; chemical reaction
; gas phase reaction
; nitrate
; oxidant
; particulate matter
; photochemistry
; qualitative analysis
; quantitative analysis
; radical
; smog
; troposphere
; absorption
; Article
; atmospheric pressure
; controlled study
; gas
; infrared spectroscopy
; mass fragmentography
; photochemical smog
; photooxidation
; priority journal
; reaction analysis
; reaction time
; time of flight mass spectrometry
; water absorption
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: An analysis of reaction products for the reaction of E,E-2,4-hexadienal with chlorine atoms (Cl) and OH and NO3 radicals has been carried out at the first time with the aim of obtaining a better understanding of the tropospheric reactivity of α,β-unsaturated carbonyl compounds. Fourier Transform Infrared (FTIR) spectroscopy and Gas Chromatography-Mass Spectrometry with a Time of Flight detector (GC-TOFMS) were used to carry out the qualitative and/or quantitative analyses. Reaction products in gas and particulate phase were observed from the reactions of E,E-2,4- hexadienal with all oxidants. E/Z-Butenedial and maleic anhydride were the main products identified in gas phase. E-butenedial calculated molar yield ranging from 4 to 10%. A significant amount of multifunctional compounds (chloro and hydroxy carbonyls) was identified. These compounds could be formed in particulate phase explaining the ∼90% of unaccounted carbon in gas phase. The reaction with Cl atoms in the presence of NOx with a long reaction time gave Peroxy Acetyl Nitrate (PAN) as an additional product, which is known for being an important specie in the generation of the photochemical smog. Nitrated compounds were the major organic products from the reaction with the NO3 radical. Based on the identified products, the reaction mechanisms have been proposed. In these mechanisms a double bond addition of the atmospheric oxidant at C4/C5 of E,E-2,4-hexadienal is the first step for tropospheric degradation. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83007
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, Departamento de Química Física, Facultad de Ciencias y Tecnologías Químicas, Avda. Camilo José Cela S/N, Ciudad Real, Spain; Universidad de Castilla La Mancha, Instituto de Combustión y Contaminación Atmosférica (ICCA), Camino Moledores S/N, Ciudad Real, Spain
Recommended Citation:
Colmenar I,, Martin P,, Cabañas B,et al. Analysis of reaction products formed in the gas phase reaction of E,E-2,4-hexadienal with atmospheric oxidants: Reaction mechanisms and atmospheric implications[J]. Atmospheric Environment,2018-01-01,176