DOI: 10.1016/j.atmosenv.2015.09.001
Scopus记录号: 2-s2.0-84949626658
论文题名: Thermal desorption single particle mass spectrometry of ambient aerosol in Shanghai
作者: Zhai J ; , Wang X ; , Li J ; , Xu T ; , Chen H ; , Yang X ; , Chen J
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 123 起始页码: 407
结束页码: 414
语种: 英语
英文关键词: Aerosol volatility
; Mixing state
; SPAMS
; Thermal desorption
Scopus关键词: Aerosols
; Desorption
; Dust
; Mass spectrometers
; Mass spectrometry
; Mixing
; Spectrometry
; Thermal desorption
; Aerosol mass spectrometry
; Chemical compositions
; Individual particles
; Laboratory experiments
; Mixing state
; Single particle mass spectrometry
; SPAMS
; Volatile composition
; Biomass
; activated carbon
; ammonium nitrate
; ammonium sulfate
; carbon
; nitrate
; nitrogen
; sulfate
; aerosol
; biomass burning
; desorption
; mass spectrometry
; temperature effect
; urban atmosphere
; aerosol
; ambient air
; Article
; biomass
; chemical composition
; China
; combustion
; desorption
; evaporation
; high temperature
; limit of detection
; mass spectrometry
; mineral dust
; oxidation
; particle size
; priority journal
; single particle mass spectrometry
; straw
; temperature
; volatilization
; China
; Shanghai
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: Submicron aerosol volatility, chemical composition, and mixing state were simultaneously measured using a thermodenuder (TD) in-line with a single particle aerosol mass spectrometry (SPAMS) during Nov.12 to Dec. 11 of 2014 in Shanghai. By heating up to 250 °C, the signals of refractory species such as elemental carbon, metallic compounds, and mineral dust in aerosols were enhanced in the mass spectra. At 250 °C, the main particle types present in the size range of 0.2-1.0 μm were biomass burning (37% by number) and elemental carbon (20%). From 1.0 to 2.0 μm, biomass burning (30%), dust (19%) and metal-rich (18%) were the primary particle types. CN- signal remained in the mass spectra of the heated biomass burning particles suggests the existence of some extremely low-volatility nitrogen-containing organics. Laboratory experiments were conducted by burning rice straws, the main source material of biomass burning particles in Southern China, to confirm the less volatile composition contributed by biomass burning. Strong CN- with relative area >0.21 was observed in most of the laboratory-made biomass burning particles when heated above 200 °C and was selected as a new marker to identify the biomass burning particles in the field. The TD-SPAMS measured the size-resolved chemical composition of the individual particle residues at different temperatures and offered more information on the aging processes of primary particles and their sources. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81404
Appears in Collections: 气候变化事实与影响
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作者单位: Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention, Department of Environmental Science and Engineering, Fudan University, Shanghai, China; Fudan-Tyndall Center, Fudan University, Shanghai, China
Recommended Citation:
Zhai J,, Wang X,, Li J,et al. Thermal desorption single particle mass spectrometry of ambient aerosol in Shanghai[J]. Atmospheric Environment,2015-01-01,123