DOI: 10.1016/j.atmosenv.2014.12.035
Scopus记录号: 2-s2.0-84920131615
论文题名: Summertime distributions of peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN) in Beijing: Understanding the sources and major sink of PAN
作者: Zhang G ; , Mu Y ; , Zhou L ; , Zhang C ; , Zhang Y ; , Liu J ; , Fang S ; , Yao B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 289
结束页码: 296
语种: 英语
英文关键词: Atmosphere
; Peroxyacetyl nitrate
; Peroxypropionyl nitrate
; Thermal decomposition
Scopus关键词: Acetone
; Decomposition
; Earth atmosphere
; Ketones
; Nitrates
; Peroxides
; Photochemical forming
; Pyrolysis
; Reaction kinetics
; Volatile organic compounds
; Diurnal variation
; Electron capture detectors
; Gas chromatographs
; Good correlations
; High temperature
; Methyl vinyl ketones
; Peroxyacetyl nitrates
; Peroxypropionyl nitrates
; Atmospheric chemistry
; nitric acid derivative
; peroxyacetylnitrate
; peroxypropionyl nitrate
; unclassified drug
; volatile organic compound
; anthropogenic source
; atmospheric chemistry
; correlation
; diurnal variation
; nitrate
; peroxy radical
; photochemistry
; summer
; thermal decomposition
; volatile organic compound
; air temperature
; Article
; atmospheric diffusion
; boundary layer
; chemical reaction
; circadian rhythm
; controlled study
; decomposition
; high temperature
; limit of detection
; summer
; urban area
; wet deposition
; Beijing [China]
; China
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: Peroxyacetyl nitrate (PAN), a major secondary pollutant in the atmosphere, has received much concern for its particular importance in atmospheric chemistry and adverse effects on human and plants. Atmospheric PAN and PPN were measured by using a gas chromatograph equipped with electron capture detector (GC-ECD) from June to September 2010, and the source and major sink for PAN were firstly studied in Beijing. The distinct diurnal variations of PAN and PPN with maximum in the afternoon were observed, and the mean and maximum values were 2.61±2.57ppbv (N=839) and 12.5ppbv for PAN and 0.52±0.38ppbv (N=152) and 2.16ppbv for PPN during the measuring period, respectively. Good correlation (R=0.85) between PAN and PPN with a slope (δPPN/δPAN) of 0.134 indicated that anthropogenic volatile organic compounds (AVOCs) dominated the photochemical formation of PANs in Beijing. Further, we found acetaldehyde was the predominant carbonyl precursor of PAN with the contribution of 59.7% to the total peroxyacetyl (PA) radical. Methyl glyoxal, methacrolein, acetone, methyl vinyl ketone, and biacetyl contributed 7.1%, 8.8%, 19.7%, 3.4%, and 1.3% to total PA radical, respectively. Anti-correlation between PAN concentrations and the NO/NO2 ratios was found during the whole investigating period. In addition, the amount of PAN lost by thermal decomposition (TPAN) accounted for remarkable fractions of PAN observed under high temperature during both daytime and nighttime. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82072
Appears in Collections: 气候变化事实与影响
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作者单位: Key Laboratory for Atmospheric Chemistry, Institute of Atmospheric Composition, Chinese Academy of Meteorological Sciences, China Meteorological Administration, Beijing, China; Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Zhang G,, Mu Y,, Zhou L,et al. Summertime distributions of peroxyacetyl nitrate (PAN) and peroxypropionyl nitrate (PPN) in Beijing: Understanding the sources and major sink of PAN[J]. Atmospheric Environment,2015-01-01,103