DOI: 10.1016/j.atmosenv.2014.12.048
Scopus记录号: 2-s2.0-84919797615
论文题名: Concentrations and sources of non-methane hydrocarbons (NMHCs) from 2005 to 2013 in Hong Kong: A multi-year real-time data analysis
作者: Ou J ; , Guo H ; , Zheng J ; , Cheung K ; , Louie P ; K ; K ; , Ling Z ; , Wang D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 196
结束页码: 206
语种: 英语
英文关键词: Multi-year trends
; NMHCs
; Photochemical reaction loss
; PMF
; Source apportionment
Scopus关键词: Consumer products
; Gas emissions
; Information analysis
; Liquefied petroleum gas
; Methane
; Photochemical reactions
; Architectural paints
; Liquefied petroleum gas (LPG)
; Multi-year trends
; NMHCs
; Non-methane hydrocarbons
; PMF
; Positive matrix factorization models
; Source apportionment
; Data handling
; hydrocarbon
; methane
; non methane hydrocarbon
; petroleum derivative
; unclassified drug
; atmospheric pollution
; concentration (composition)
; data interpretation
; emission inventory
; nonmethane hydrocarbon
; ozone
; photochemistry
; pollutant source
; real time
; traffic emission
; trend analysis
; air pollutant
; air quality
; Article
; comparative study
; data analysis
; Hong Kong
; limit of detection
; meteorology
; positive matrix factorization
; solar radiation
; species differentiation
; China
; Hong Kong
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: To understand the long-term variations of nonmethane hydrocarbons (NMHCs) and their emission sources, real-time speciated NMHCs have been monitored in Hong Kong since 2005. Data analysis showed that the concentrations of C3-C5 and C6-C7 alkanes slightly increased from 2005 to 2013at a rate of 0.0015 and 0.0005μgm-3yr-1 (p<0.05), respectively, while aromatics decreased at a rate of 0.006μgm-3yr-1 (p<0.05). Positive Matrix Factorization (PMF) model was applied to identify and quantify the NMHC sources. Vehicular exhaust, gasoline evaporation and liquefied petroleum gas (LPG) usage, consumer product and printing, architectural paints, and biogenic emissions were identified and on average accounted for 20.2±6.2%, 25.4±6.3%, 32.6±5.8%, 21.5±4.5%, and 3.3±1.5% of the ambient NMHC concentrations, respectively. From 2005 to 2013, the contributions of both traffic-related sources and solvent-related sources showed no significant changes, different from the trends in emission inventory. On O3 episode days dominated by local air masses, the increase ratio of NMHC species from non-episode to episode days was found to be a natural function of the reactivity of NMHC species, suggesting that photochemical reaction would significantly change the NMHCs composition between emission sources and the receptors. Effect of photochemical reaction loss on receptor-oriented source apportionment analysis needs to be quantified in order to identify the NMHCs emission sources on O3 episode days. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82021
Appears in Collections: 气候变化事实与影响
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作者单位: Shenzhen Research Institute, The Hong Kong Polytechnic University, Shenzhen, China; Air Quality Studies, Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hong Kong; School of Environmental Sciences and Engineering, South China University of Technology, China; Air Group, Hong Kong Environmental Protection Department, Hong Kong
Recommended Citation:
Ou J,, Guo H,, Zheng J,et al. Concentrations and sources of non-methane hydrocarbons (NMHCs) from 2005 to 2013 in Hong Kong: A multi-year real-time data analysis[J]. Atmospheric Environment,2015-01-01,103