DOI: 10.1016/j.atmosenv.2017.04.035
Scopus记录号: 2-s2.0-85018400287
论文题名: Effect of traffic restriction on reducing ambient volatile organic compounds (VOCs): Observation-based evaluation during a traffic restriction drill in Guangzhou, China
作者: Huang X ; , Zhang Y ; , Yang W ; , Huang Z ; , Wang Y ; , Zhang Z ; , He Q ; , Lü S ; , Huang Z ; , Bi X ; , Wang X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 161 起始页码: 61
结束页码: 70
语种: 英语
英文关键词: Guangzhou
; Non-methane hydrocarbons
; Observation-based evaluation
; Positive matrix factorization
; Traffic restriction
; Volatile organic compounds
Scopus关键词: Air pollution control
; Benzene
; Carbon
; Carbon monoxide
; Drills
; Factorization
; Gasoline
; Hydrocarbons
; Industrial emissions
; Methane
; Mixing
; Monitoring
; Organic compounds
; Pollution control
; Roadsides
; Toluene
; Vehicles
; Volatile organic compounds
; Guangzhou
; Non-methane hydrocarbons
; Observation-based evaluation
; Positive Matrix Factorization
; Traffic restrictions
; Matrix algebra
; benzene
; carbon monoxide
; gasoline
; hydrocarbon
; liquefied petroleum gas
; tert butyl methyl ether
; toluene
; volatile organic compound
; atmospheric pollution
; benzene
; biomass burning
; carbon monoxide
; hydrocarbon
; mixing ratio
; MTBE
; pollutant source
; traffic emission
; volatile organic compound
; air monitoring
; air pollution
; ambient air
; Article
; biomass
; burn
; China
; exhaust gas
; meteorology
; priority journal
; traffic
; China
; Guangdong
; Guangzhou
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: Traffic restriction (TR) is a widely adopted control measure in case of heavy air pollution particularly in urban areas, yet it is hard to evaluate the effect of TR on reducing VOC emissions based on monitoring data since ambient VOC mixing ratios are influenced not only by source emissions but also by meteorological conditions and atmospheric degradation. Here we collected air samples for analysis of VOCs before, during and after a TR drill carried out in Guangzhou in September 2010 at both a roadside and a rooftop (∼50 m above the ground) site. TR measures mainly included the “odd-even license” rule and banning high-emitting “yellow label” vehicles. The mixing ratios of non-methane hydrocarbons (NMHCs) did not show significant changes at the roadside site with total NMHCs of 39.0 ± 11.8 ppbv during non-TR period and 39.1 ± 14.8 ppbv during TR period, whereas total NMHCs decreased from 30.4 ± 14.3 ppbv during the non-TR period to 22.1 ± 10.6 ppbv during the TR period at rooftop site. However, the ratios of methyl tert-butyl ether (MTBE), benzene and toluene against carbon monoxide (MTBE/CO, T/CO and B/CO) at the both sampling sites dropped significantly. The ratios of toluene to benzene (T/B) instead increased significantly. Changes in these ratios all consistently indicated reduced input from traffic emissions particularly gasoline vehicles. Source attribution by positive matrix factorization (PMF) confirmed that during the TR period gasoline vehicles contributed less VOCs in percentages while industrial sources, biomass burning and LPG shared larger percentages. Assuming that emissions from industrial sources remained unchanged during the TR and non-TR periods, we further used the PMF-retrieved contribution percentages to deduce the reduction rate of traffic-related VOC emissions, and obtained a reduction rate of 31% based on monitoring data at the roadside site and of 34% based on the monitoring data at the rooftop site. Considering VOC emissions from all sources in Guangzhou city, the TR control measures adopted could reduce VOC up to 15%. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82780
Appears in Collections: 气候变化事实与影响
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作者单位: Guangdong Key Laboratory of Environmental Protection and Resources Utilization, State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, China; University of Chinese Academy of Sciences, Beijing, China; Guangzhou Environmental Monitoring Center, Guangzhou, China
Recommended Citation:
Huang X,, Zhang Y,, Yang W,et al. Effect of traffic restriction on reducing ambient volatile organic compounds (VOCs): Observation-based evaluation during a traffic restriction drill in Guangzhou, China[J]. Atmospheric Environment,2017-01-01,161