DOI: 10.1016/j.atmosenv.2017.07.031
Scopus记录号: 2-s2.0-85025115450
论文题名: Diagnosing Tibetan pollutant sources via volatile organic compound observations
作者: Li H ; , He Q ; , Song Q ; , Chen L ; , Song Y ; , Wang Y ; , Lin K ; , Xu Z ; , Shao M
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 166 起始页码: 244
结束页码: 254
语种: 英语
英文关键词: Regional transport
; Sources
; Tibet
; Tracers
; Volatile organic compounds
Scopus关键词: Carbon
; Elementary particle sources
; Factorization
; Gas chromatography
; Geographical regions
; Organic compounds
; Organic pollutants
; Pollution
; Radioactive tracers
; Volatile organic compounds
; Antarctic regions
; Atmospheric transport
; Back trajectory analysis
; Indo-Gangetic Plains
; Positive matrix factorization models
; Regional transport
; Tibet
; Transport of pollutants
; Atmospheric movements
; benzene
; black carbon
; toluene
; volatile organic compound
; atmospheric transport
; biomass burning
; black carbon
; climate change
; environmental impact
; industrial emission
; mitigation
; observational method
; pollutant source
; pollutant transport
; spatial distribution
; traffic emission
; volatile organic compound
; Afghanistan
; air pollutant
; Arctic and Antarctic
; Article
; Asia
; atmospheric transport
; biomass
; climate change
; combustion
; model
; Pakistan
; pollution transport
; priority journal
; Tajikistan
; Tibet
; traffic and transport
; Afghanistan
; Arctic and Antarctic
; China
; Gangetic Plain
; India
; Myanmar
; Pakistan
; Tajikistan
; Xizang
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: Atmospheric transport of black carbon (BC) from surrounding areas has been shown to impact the Tibetan environment, and clarifying the geographical source and receptor regions is crucial for providing guidance for mitigation actions. In this study, 10 trace volatile organic compounds (VOCs) sampled across Tibet are chosen as proxies to diagnose source regions and related transport of pollutants to Tibet. The levels of these VOCs in Tibet are higher than those in the Arctic and Antarctic regions but much lower than those observed at many remote and background sites in Asia. The highest VOC level is observed in the eastern region, followed by the southern region and the northern region. A positive matrix factorization (PMF) model found that three factors—industry, biomass burning, and traffic—present different spatial distributions, which indicates that different zones of Tibet are influenced by different VOC sources. The average age of the air masses in the northern and eastern regions is estimated to be 3.5 and 2.8 days using the ratio of toluene to benzene, respectively, which indicates the foreign transport of VOC species to those regions. Back-trajectory analyses show that the Afghanistan-Pakistan-Tajikistan region, Indo-Gangetic Plain (IGP), and Meghalaya-Myanmar region could transport industrial VOCs to different zones of Tibet from west to east. The agricultural bases in northern India could transport biomass burning-related VOCs to the middle-northern and eastern zones of Tibet. High traffic along the unique national roads in Tibet is associated with emissions from local sources and neighboring areas. Our study proposes international joint-control efforts and targeted actions to mitigate the climatic changes and effects associated with VOCs in Tibet, which is a climate sensitive region and an important source of global water. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82602
Appears in Collections: 气候变化事实与影响
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作者单位: School of Environment and Safety, Taiyuan University of Science and Technology, Taiyuan, China; Urban Environment and Ecology Research Center, South China Institute of Environmental Science (SCIES), Ministry of Environmental Protection (MEP), Guangzhou, China; School of Earth and Atmospheric Science, Georgia Institute of Technology, Atlanta, GA, United States; College of Environmental Sciences and Engineering, Peking University, Beijing, China
Recommended Citation:
Li H,, He Q,, Song Q,et al. Diagnosing Tibetan pollutant sources via volatile organic compound observations[J]. Atmospheric Environment,2017-01-01,166