DOI: 10.1016/j.atmosenv.2014.09.067
Scopus记录号: 2-s2.0-84907990846
论文题名: Biomass burning contribution to ambient volatile organic compounds (VOCs) in the chengdu-chongqing region (CCR), China
作者: Li L ; , Chen Y ; , Zeng L ; , Shao M ; , Xie S ; , Chen W ; , Lu S ; , Wu Y ; , Cao W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 99 起始页码: 403
结束页码: 410
语种: 英语
英文关键词: Biomass burning
; Chemical reactivity
; Enhancement ratio
; VOCs
Scopus关键词: Biomass-burning
; Enhancement ratios
; VOCs
; Chemical reactivity
; acetaldehyde
; acetonitrile
; alkane derivative
; aromatic compound
; ethylene
; formaldehyde
; hydrocarbon
; methanol
; non methane hydrocarbon
; propylene
; unclassified drug
; volatile organic compound
; atmospheric pollution
; biomass burning
; chemical composition
; chemical property
; methanol
; mixing ratio
; tracer
; volatile organic compound
; air pollution
; ambient air
; Article
; biomass burning
; chemical composition
; chemical reaction
; China
; fire and fire related phenomena
; fire ecology
; mass fragmentography
; Chengdu
; China
; Chongqing
; Sichuan
; Ziyang [Sichuan]
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: Ambient volatile organic compounds (VOCs) were measured intensively using an online gas chromatography-mass spectrometry/flame ionization detector (GC-MS/FID) at Ziyang in the Chengdu-Chongqing Region (CCR) from 6 December 2012 to 4 January 2013. Alkanes contributed the most (59%) to mixing ratios of measured non-methane hydrocarbons (NMHCs), while aromatics contributed the least (7%). Methanol was the most abundant oxygenated VOC (OVOC), contributing 42% to the total amount of OVOCs. Significantly elevated VOC levels occurred during three pollution events, but the chemical composition of VOCs did not differ between polluted and clean days. The OH loss rates of VOCs were calculated to estimate their chemical reactivity. Alkenes played a predominant role in VOC reactivity, among which ethylene and propene were the largest contributors; the contributions of formaldehyde and acetaldehyde were also considerable. Biomass burning had a significant influence on ambient VOCs during our study. We chose acetonitrile as a tracer and used enhancement ratio to estimate the contribution of biomass burning to ambient VOCs. Biomass burning contributed 9.4%-36.8% to the mixing ratios of selected VOC species, and contributed most (>30% each) to aromatics, formaldehyde, and acetaldehyde. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80497
Appears in Collections: 气候变化事实与影响
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作者单位: College of Environmental Sciences and Engineering, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Peking University, Beijing, China
Recommended Citation:
Li L,, Chen Y,, Zeng L,et al. Biomass burning contribution to ambient volatile organic compounds (VOCs) in the chengdu-chongqing region (CCR), China[J]. Atmospheric Environment,2014-01-01,99