DOI: 10.1016/j.atmosenv.2016.12.008
Scopus记录号: 2-s2.0-85003480052
论文题名: Characteristics of volatile organic compounds (VOCs) from the evaporative emissions of modern passenger cars
作者: Yue T ; , Yue X ; , Chai F ; , Hu J ; , Lai Y ; , He L ; , Zhu R
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 151 起始页码: 62
结束页码: 69
语种: 英语
英文关键词: Evaporative emissions
; Gasoline components
; Ozone formation potential (OFP)
; Volatile organic compounds (VOCs)
Scopus关键词: Aromatic compounds
; Aromatic hydrocarbons
; Aromatization
; Automobiles
; Gas chromatography
; Gasoline
; Hydrocarbons
; Olefins
; Organic compounds
; Ozone
; Paraffins
; Toluene
; Transportation
; Vehicles
; Volatile organic compounds
; 2 ,2 ,4-trimethylpentane
; Aromatic contents
; Diurnal emissions
; Emission mechanism
; Evaporative emission
; Ozone formation potentials
; Photochemical air pollution
; Weight percentages
; Air pollution
; alkane
; alkene
; aromatic compound
; aromatic hydrocarbon
; fuel
; gasoline
; hydrocarbon
; isopentane
; ozone
; pentane
; toluene
; volatile organic compound
; alkane
; atmospheric pollution
; automobile
; chemical composition
; evaporation
; fuel
; ozone
; photochemistry
; traffic emission
; volatile organic compound
; air analysis
; Article
; chemical composition
; China
; concentration (parameters)
; dynamometer
; environmental monitoring
; evaporation
; exhaust gas
; molecular weight
; priority journal
; China
; United States
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: Volatile organic compounds (VOCs) from vehicle evaporative emissions contribute substantially to photochemical air pollution. Yet, few studies of the characteristics of VOCs emitted from vehicle evaporative emissions have been published. We investigate the characteristics of 57 VOCs in hot soak, 24 h diurnal and 48 h diurnal emissions by applying the Sealed Housing Evaporative Determination unit (SHED) test to three modern passenger cars (one US Tier 2 and two China IV vehicles) using two different types of gasoline. The characteristics of the VOCs from the hot soak, 24 h diurnal and 48 h diurnal emissions were different due to their different emission mechanisms. In the hot soak emissions, toluene, isopentane/n-pentane, and 2,2,4-trimethylpentane were dominant species. In the 24 h and 48 h diurnal emissions, isopentane and n-pentane were dominant species. Toluene was the third most dominant component in the 24 h diurnal emissions but decreased by a mass of 42%–80% in the 48 h diurnal emissions. In the hot soak, 24 h diurnal and 48 h diurnal emissions, alkanes were generally the dominant hydrocarbons, followed by aromatics and olefins. However, owing to different evaporative emission mechanisms, the weight percentages of the aromatic hydrocarbons decreased and the weight percentages of the alkanes increased from the hot soak test to the 24 h diurnal and 48 h diurnal tests for each vehicle. The dominant contributors to the ozone formation potentials (OFPs) were also different in the hot soak, 24 h diurnal and 48 h diurnal emissions. The OFPs (g O3/g VOC) of the hot soak emissions were higher than those of the 24 h and 48 h diurnal emissions. In addition, the combined effect of decreasing the olefin and aromatic contents of gasoline on vehicle evaporative emissions was investigated. The aromatics all decreased substantially in the hot soak, 24 h and 48 h diurnal emissions, and the total masses of the VOCs and OFPs decreased, with the greatest reduction occurring in the hot soak emissions when the fuel aromatic and olefin contents were reduced. © 2016 Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82231
Appears in Collections: 气候变化事实与影响
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作者单位: College of Water Sciences, Beijing Normal University, Beijing, China; State Environmental Protection Key Laboratory of Vehicle Emission Control and Simulation, Chinese Research Academy of Environmental Sciences, Beijing, China; Chinese Research Academy of Environmental Sciences, Beijing, China; Xiamen Environment Protection Vehicle Emission Control Technology Center, Xiamen, China; School of Environment, Tsinghua University, Beijing, China
Recommended Citation:
Yue T,, Yue X,, Chai F,et al. Characteristics of volatile organic compounds (VOCs) from the evaporative emissions of modern passenger cars[J]. Atmospheric Environment,2017-01-01,151