DOI: 10.1016/j.atmosenv.2017.06.034
Scopus记录号: 2-s2.0-85021183079
论文题名: Mass size distribution of particle-bound water
作者: Canepari S ; , Simonetti G ; , Perrino C
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 165 起始页码: 46
结束页码: 56
语种: 英语
英文关键词: Atmospheric stability
; Desert dust
; Karl Fisher analysis
; Particulate matter
; Urban dust
Scopus关键词: Atmospheric aerosols
; Atmospheric chemistry
; Chemical analysis
; Chemical stability
; Dust
; Landforms
; Mercury (metal)
; Nitrates
; Roads and streets
; Size distribution
; Stability
; Urban growth
; Atmospheric stability
; Bimodal distribution
; Chemical component
; Desert dust
; Environmental conditions
; Karl Fisher analysis
; Mass size distribution
; Particulate Matter
; Population distribution
; ammonium nitrate
; water
; aerosol
; analytical method
; chemical composition
; desert
; desorption
; dust
; particle size
; particulate matter
; size distribution
; urban atmosphere
; water
; aerosol
; Article
; body water
; chemical composition
; combustion
; desert
; desorption
; dust
; environmental protection
; natural radioactivity
; particle size
; particulate matter
; priority journal
; water content
; water supply
; winter
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: The thermal-ramp Karl-Fisher method (tr-KF) for the determination of PM-bound water has been applied to size-segregated PM samples collected in areas subjected to different environmental conditions (protracted atmospheric stability, desert dust intrusion, urban atmosphere). This method, based on the use of a thermal ramp for the desorption of water from PM samples and the subsequent analysis by the coulometric KF technique, had been previously shown to differentiate water contributes retained with different strength and associated to different chemical components in the atmospheric aerosol. The application of the method to size-segregated samples has revealed that water showed a typical mass size distribution in each one of the three environmental situations that were taken into consideration. A very similar size distribution was shown by the chemical PM components that prevailed during each event: ammonium nitrate in the case of atmospheric stability, crustal species in the case of desert dust, road-dust components in the case of urban sites. The shape of the tr-KF curve varied according to the size of the collected particles. Considering the size ranges that better characterize the event (fine fraction for atmospheric stability, coarse fraction for dust intrusion, bi-modal distribution for urban dust), this shape is coherent with the typical tr-KF shape shown by water bound to the chemical species that predominate in the same PM size range (ammonium nitrate, crustal species, secondary/combustion species - road dust components). © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82776
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Chemistry, Sapienza University of Rome, P.le Aldo Moro, 5, Rome, Italy; C.N.R. Institute of Atmospheric Pollution Research, Via Salaria, Km 29,300, Monterotondo St., Rome, Italy
Recommended Citation:
Canepari S,, Simonetti G,, Perrino C. Mass size distribution of particle-bound water[J]. Atmospheric Environment,2017-01-01,165