| DOI: | 10.1016/j.atmosenv.2014.11.039
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| Scopus记录号: | 2-s2.0-84983161961
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| 论文题名: | Modeling of 1,3-butadiene in urban and industrial areas |
| 作者: | Czader B; H; , Rappenglück B
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| 刊名: | Atmospheric Environment
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| ISSN: | 0168-2563
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| EISSN: | 1573-515X
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| 出版年: | 2015
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| 卷: | 102 | | 起始页码: | 30
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| 结束页码: | 42
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| 语种: | 英语
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| 英文关键词: | 1,3-Butadiene
; CMAQ
; Emission inventory
; Houston
; Reaction pathways
; TexAQS 2006
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| Scopus关键词: | Air pollution
; Air quality
; Chemical reactions
; Free radicals
; Mixing
; Ozone
; 1 ,3-butadiene
; CMAQ
; Emission inventories
; Houston
; Reaction pathways
; TexAQS 2006
; Industrial emissions
; 1,3 butadiene
; alkane
; alkene
; ethylene
; hydroxyl radical
; propylene
; air quality
; alkene
; chemical reaction
; concentration (composition)
; emission inventory
; industrial location
; mixing ratio
; nitrous oxide
; ozone
; pollutant source
; pollutant transport
; spatiotemporal analysis
; urban area
; air quality
; Article
; chemical reaction
; industrial area
; meteorology
; photooxidation
; priority journal
; reaction analysis
; secondary organic aerosol
; urban area
; Houston
; Texas
; United States
|
| Scopus学科分类: | Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
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| 英文摘要: | 1,3-butadiene is an important pollutant in terms of public health and important driver for photochemical processes influencing ozone formation in the area of Houston. Ambient levels of 1,3-butadiene were simulated with the Community Multiscale Air Quality model (CMAQ) including the SAPRC99-extended mechanism and the results were compared to spatially and temporally resolved observations of 1,3-butadiene for an episodic period during Summer 2006. Relative contributions of different type of emissions and chemical reactions to 1,3-butadiene concentrations were examined, the highest contribution was found to be from industrial emission sources. 1,3-butadiene mixing ratios in the urban area were found to be lower than in the industrial area. Although emissions of 1,3-butadiene peak during daytime its mixing ratios are lower during daytimes as compared to nighttime. 1,3-butadiene is removed from the surface through vertical upward transport (~90%) and chemical reactions (~10%). During daytime 1,3-butadiene reacts mainly with the OH radical (90%), during nighttime this reaction pathway is still significant in the industrial area (57% of all reaction pathways). Reaction with NO3 during nighttime contributes 33% in industrial and 56% in urban areas, where high NOx emissions occur. Reaction with ozone contributes 10% and 13% in industrial and urban areas, respectively. Analysis of measured data revealed that episodically very high emissions spikes of 1,3-butadiene occur. CMAQ often underpredicts 1,3-butadiene mixing ratios when sites are exposed to sporadic releases from industrial facilities. These releases are not accounted for in the emission inventory. It also appears that emissions of 1,3-butadiene from point sources have much more variability than those listed in the emission inventory. © 2014 Elsevier Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/82080
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| Appears in Collections: | 气候变化事实与影响
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作者单位: | Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, United States
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| Recommended Citation: | |
Czader B,H,, Rappenglück B. Modeling of 1,3-butadiene in urban and industrial areas[J]. Atmospheric Environment,2015-01-01,102
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