DOI: 10.1016/j.atmosenv.2014.09.033
Scopus记录号: 2-s2.0-84907168785
论文题名: Reactivity of 3-hydroxy-3-methyl-2-butanone: Photolysis and OH reaction kinetics
作者: Bouzidi H ; , Laversin H ; , Tomas A ; , Coddeville P ; , Fittschen C ; , El Dib G ; , Roth E ; , Chakir A
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 98 起始页码: 540
结束页码: 548
语种: 英语
英文关键词: 3-Hydroxy-3-methyl-2-butanone
; Kinetics
; OH radicals
; Photolysis
; Tropospheric lifetimes
Scopus关键词: Photolysis
; 3-hydroxy-3-methyl-2-butanone
; OH radical
; Tropospheric lifetime
; Enzyme kinetics
; 2 butanone
; 3 hydroxy 3 methyl 2 butanone
; acetaldehyde
; acetic acid
; acetone
; carbon monoxide
; cyclohexane
; cyclohexanol
; cyclohexanone
; cyclopentane
; formaldehyde
; hydroxyl radical
; ketol
; methanol
; scavenger
; unclassified drug
; atmospheric chemistry
; hydroxyl radical
; ketone
; photolysis
; reaction kinetics
; reaction rate
; troposphere
; volatile organic compound
; Article
; carbon balance
; chemical reaction
; chemical structure
; degradation
; oxidation kinetics
; photolysis
; quantum yield
; reaction analysis
; temperature dependence
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: Hydroxycarbonyl compounds are important secondary reaction products in the oxidation of Volatile Organic Compounds (VOCs) in the atmosphere. The atmospheric fate of these oxygenated VOCs is however poorly understood, especially the relevance of the photolytic pathway. In this work, a combined investigation of the photolysis and temperature-dependent OH radical reaction of 3-hydroxy-3-methyl-2-butanone (3H3M2B) is presented. A photolysis lifetime of about 4-5 days was estimated with a global quantum yield of 0.10. The OH reaction rate coefficient follows the Arrhenius trend (298-356 K) and could be modelled through the following expression: k3H3M2B(T) = (5.12 ± 0.07) × 10-12 exp(-563 ± 119/T) in cm3 molecule-1 s-1. A 3H3M2B atmospheric lifetime of 15 days towards the OH radical was evaluated. Our results showed that the photolysis pathway is the major degradation channel for 3H3M2B. Photolysis products were identified and quantified in the present work with a carbon balance of around 80% enabling a reaction mechanism to be proposed. The present work underlines the need for further studies on the atmospheric chemistry of oxygenated VOCs. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80615
Appears in Collections: 气候变化事实与影响
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作者单位: Mines Douai, De´partement S.A.G.E, Douai, France; Groupe de Spectrome´trie Mole´culaire et Atmosphe´rique, UMR CNRS 7331, Universite´ de Reims, Reims, France; Physico-chimie des Processus de Combustion et de l'Atmosphe`re, UMR CNRS 8522, Universite´ Lille 1, Villeneuve d'Ascq, France; Institut de Physique, De´partement de Physique Mole´culaire, UMR 6251 CNRS, Rennes, France
Recommended Citation:
Bouzidi H,, Laversin H,, Tomas A,et al. Reactivity of 3-hydroxy-3-methyl-2-butanone: Photolysis and OH reaction kinetics[J]. Atmospheric Environment,2014-01-01,98