globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2017.04.029
Scopus记录号: 2-s2.0-85018752308
论文题名:
Characterizations of volatile organic compounds (VOCs) from vehicular emissions at roadside environment: The first comprehensive study in Northwestern China
作者: Li B; , Ho S; S; H; , Xue Y; , Huang Y; , Wang L; , Cheng Y; , Dai W; , Zhong H; , Cao J; , Lee S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161
起始页码: 1
结束页码: 12
语种: 英语
英文关键词: Ozone precursors ; Roadside ; Source apportionment ; Vehicular emissions ; VOCs
Scopus关键词: Factorization ; Gasoline ; Organic compounds ; Ozone ; Paraffins ; Volatile organic compounds ; Anthropogenic sources ; Ozone formation potentials ; Ozone precursors ; Positive Matrix Factorization ; Roadside environments ; Source apportionment ; Urban and suburban areas ; Vehicular emission ; Roadsides ; benzene ; diesel fuel ; gasoline ; isopentane ; natural gas ; ozone ; propylene ; toluene ; volatile organic compound ; anthropogenic source ; chemical composition ; ozone ; roadside environment ; source apportionment ; suburban area ; trace gas ; traffic emission ; urban area ; volatile organic compound ; air sampling ; Article ; China ; combustion ; data base ; environment ; evaporation ; exhaust gas ; model ; priority journal ; suburban area ; summer ; traffic and transport ; China ; Shaanxi ; Xian
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: Vehicular emission (VE) is one of the important anthropogenic sources for ground-level volatile organic compounds (VOCs) in both urban and suburban areas. A first comprehensive campaign was conducted at an urban roadside in Xi'an, China in summer, 2016. A total of 57 VOCs, as known as critical surface ozone (O3) precursors, and other trace gases were measured simultaneously during the sampling period. Iso-pentane, a tracer of gasoline evaporation, was the most abundant VOC in the roadside samples, followed by isobutane and benzene, attributed to the largest composition (∼70%) of gasoline-fueled vehicles on the road. The molar ratio of toluene/benzene (T/B) in our study (0.36) is far lower than the range reported in other cities, indicating the stronger contributions from diesel emissions. The results of source apportionment achieved with positive matrix factorization (PMF) receptor model were highly consistent with the vehicles compositions, strongly evidenced that the precise characterization of the VE sources from those marker species. The degrees of individual compound contributed to O3 production were weighed by ozone formation potential (OFP). Propylene (20%), 1-butene (11%) and iso-pentane(10%) were the top three contributors at the roadside. The information of this study complements the VOCs database regarding to the VE sources in Northwestern China. © 2017 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82516
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作者单位: Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Department of Environmental Science and Technology, School of Human Settlements and Civil Engineering, Xi'an Jiaotong University, Xi'an, China; State Key Lab of Loess and Quaternary Geology (SKLLQG), Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China; Division of Atmospheric Sciences, Desert Research Institute, Reno, NV, United States; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong

Recommended Citation:
Li B,, Ho S,S,et al. Characterizations of volatile organic compounds (VOCs) from vehicular emissions at roadside environment: The first comprehensive study in Northwestern China[J]. Atmospheric Environment,2017-01-01,161
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