DOI: 10.1016/j.atmosenv.2017.10.031
Scopus记录号: 2-s2.0-85032963096
论文题名: Hygroscopic analysis of individual Beijing haze aerosol particles by environmental scanning electron microscopy
作者: Bai Z ; , Ji Y ; , Pi Y ; , Yang K ; , Wang L ; , Zhang Y ; , Zhai Y ; , Yan Z ; , Han X
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 172 起始页码: 149
结束页码: 156
语种: 英语
英文关键词: Deliquescence relative humidity
; ESEM
; Haze aerosol particle
; Hygroscopic behavior
Scopus关键词: Aerosols
; Alkali halides
; Alkali metals
; Metal halides
; Nitrogen compounds
; Salts
; Spectrometers
; Sulfur compounds
; Aerosol particles
; Crystallization process
; Energy dispersive spectrometers
; Environmental scanning electron microscopes
; Environmental scanning electron microscopies (ESEM)
; ESEM
; Hygroscopic behavior
; Physicochemical property
; Scanning electron microscopy
; alkali metal
; halide
; sulfate
; accuracy assessment
; aerosol
; crystallization
; haze
; hydration
; hygroscopicity
; instrumentation
; particle size
; physicochemical property
; relative humidity
; scanning electron microscopy
; sodium
; water uptake
; accuracy
; aerosol
; Article
; China
; crystallization
; haze
; humidity
; physical chemistry
; priority journal
; scanning electron microscopy
; visibility
; water transport
; water vapor
; weather
; wettability
; 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: Investigating the hygroscopic behavior of haze aerosol particles is essential for understanding their physicochemical properties and their impacts on regional weather and visibility. An environmental scanning electron microscope equipped with a home-made transmission-scattering electron imaging setup and an energy dispersive spectrometer was used for in-situ observations of pure water-soluble (WS) salts and Beijing haze particles. This imaging setup showed obvious advantages for improving the resolution and acquiring internal information of mixed particles in hydrated environments. We measured the deliquescence relative humidity of pure NaCl, NH4NO3, and (NH4)2SO4 by deliquescence–crystallization processes with an accuracy of up to 0.3% RH. The mixed haze particles showed hygroscopic activation like water uptake and morphological changes when they included WS components such as nitrates, sulfates, halides, ammoniums, and alkali metal salts. In addition, the hygroscopic behavior provides complementary information for analyzing possible phases in mixed haze particles. © 2017
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83147
Appears in Collections: 气候变化事实与影响
There are no files associated with this item.
作者单位: Institute of Microstructure and Property of Advanced Materials, Beijing University of Technology, Beijing, China; Beijing Key Laboratory of Microstructure and Properties of Solids, Beijing University of Technology, Beijing, China
Recommended Citation:
Bai Z,, Ji Y,, Pi Y,et al. Hygroscopic analysis of individual Beijing haze aerosol particles by environmental scanning electron microscopy[J]. Atmospheric Environment,2018-01-01,172