DOI: 10.1016/j.atmosenv.2017.02.035
Scopus记录号: 2-s2.0-85014525501
论文题名: Observations of N2O5 and ClNO2 at a polluted urban surface site in North China: High N2O5 uptake coefficients and low ClNO2 product yields
作者: Wang X ; , Wang H ; , Xue L ; , Wang T ; , Wang L ; , Gu R ; , Wang W ; , Tham Y ; J ; , Wang Z ; , Yang L ; , Chen J ; , Wang W
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 156 起始页码: 125
结束页码: 134
语种: 英语
英文关键词: Dinitrogen pentoxide
; Nitryl chloride
; Product yield
; Uptake coefficient
; Urban China
Scopus关键词: Aerosols
; Atmospheric chemistry
; Boundary layers
; Chlorine compounds
; Surface reactions
; Thermoelectric power plants
; Dinitrogen pentoxide
; Nitryl chloride
; Product yields
; Uptake coefficients
; Urban chinas
; Urban growth
; chloride
; chlorine
; dinitrogen pentoxide
; nitryl chloride
; unclassified drug
; aerosol composition
; atmospheric chemistry
; chlorine
; ionization
; nitrous oxide
; nocturnal boundary layer
; pollution incidence
; power plant
; urban atmosphere
; urban site
; aerosol
; Article
; China
; electric power plant
; ionization
; mass spectrometer
; plume
; priority journal
; solubility
; urban area
; wettability
; 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: Dinitrogen pentoxide (N2O5) and its heterogeneous uptake product, nitryl chloride (ClNO2), play important roles in the nocturnal boundary layer chemistry. To understand the abundances and chemistry of N2O5 and ClNO2 in the polluted urban atmosphere in North China, field measurements were conducted by deploying a chemical ionization mass spectrometer in urban Ji'nan in September 2014. The observed surface N2O5 concentrations were relatively low, with an average nocturnal value of 22 pptv, although the source of NO3 was rather strong, i.e., the NO2 and O3 were at very high levels. The N2O5 concentration peaked in the early evening, which was associated with thermal power plant plumes and residual O3. Nocturnal N2O5 was lost very rapidly, mainly through heterogeneous reactions on aerosol surfaces. The estimated N2O5 uptake coefficient was in the range of 0.042–0.092, among the highest values obtained from ground based field measurements. The fast heterogeneous reaction of N2O5 on high loadings of aerosols generated relatively high levels of ClNO2, with an average nocturnal concentration of 132 pptv. Despite the rich chloride content in aerosols, the ClNO2 product yield was low, 0.014 and 0.082 in two nighttime cases, much lower than the calculated values from the experiment-derived parameterization. The suppressed chlorine activation in polluted urban atmospheres was possibly associated with the reduced hygroscopicity, solubility, and activity of chloride in complex ambient aerosols. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82285
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Environment Research Institute, Shandong University, Ji'nan, Shandong, China; Department of Civil and Environmental Engineering, The Hong Kong Polytechnic UniversityHong Kong, China
Recommended Citation:
Wang X,, Wang H,, Xue L,et al. Observations of N2O5 and ClNO2 at a polluted urban surface site in North China: High N2O5 uptake coefficients and low ClNO2 product yields[J]. Atmospheric Environment,2017-01-01,156