DOI: 10.1016/j.atmosenv.2015.07.030
Scopus记录号: 2-s2.0-84938774999
论文题名: A study of summer and winter highly time-resolved submicron aerosol composition measured at a suburban site in Prague
作者: Kubelová L ; , Vodička P ; , Schwarz J ; , Cusack M ; , Makeš O ; , Ondráček J ; , Ždímal V
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 118 起始页码: 45
结束页码: 57
语种: 英语
英文关键词: Aerosol mass spectrometer
; Atmospheric aerosol
; Chemical composition
; Seasonal differences
; Size distribution
Scopus关键词: Air cleaners
; Atmospheric aerosols
; Boundary layer flow
; Boundary layers
; Mass spectrometers
; Meteorology
; Photochemical forming
; Size distribution
; Spectrometers
; Aerosol chemical composition
; Aerosol mass spectrometers
; Boundary layer heights
; Chemical compositions
; Maximum concentrations
; Seasonal differences
; Sub-micron particulates
; Time-of-flight aerosol mass spectrometers
; Aerosols
; organic carbon
; aerosol
; air mass
; atmospheric pollution
; boundary layer
; chemical composition
; concentration (composition)
; diurnal variation
; inorganic compound
; organic matter
; particulate matter
; seasonal variation
; size distribution
; suburban area
; sulfate
; aerosol
; air pollution
; air quality
; Article
; boundary layer
; chemical composition
; controlled study
; Czech Republic
; humidity
; ion pair chromatography
; particle size
; particulate matter
; priority journal
; residential area
; suburban area
; summer
; winter
; Czech Republic
; Czech Republic
; Prague
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 variability of aerosol chemical composition and the impact of the origin of respective air masses were studied in high time resolution for selected periods of high and low levels of aerosol burden at a suburban station in Prague-Suchdol, Czech Republic in summer and winter. Ambient aerosol measurements were performed using the compact-Time of Flight-Aerosol Mass Spectrometer (c-ToF-AMS) and variations in concentration of the main species are discussed. The average mass concentrations for the main species were (summer; winter): organic matter (4.2 μg/m3; 8.4 μg/m3), SO42- (2.0 μg/m3; 4.4 μg/m3), NH4+ (1.2 μg/m3; 2.8 μg/m3), NO3- (0.8 μg/m3; 5.4 μg/m3) and Cl- (0.1 μg/m3; 0.23 μg/m3). We found an inverse relationship between non-refractory submicron particulate matter (NR-PM1) levels and the boundary layer height, mainly in winter. Furthermore, levels of pollution were influenced by the air mass origin, where cleaner maritime air masses resulted in lower aerosol levels compared to those of continental origin. Analysis of the diurnal variation of NR-PM1 showed minimum concentrations in the afternoon caused by dilution as a result of an increase in the boundary layer height. Most maximum concentrations of the main species occurred in the morning or night except sulphate which had a midday maximum, probably due to downdraft from upper boundary layer air and photochemical formation in the afternoon. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81562
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Chemical Process Fundamentals, CAS, v.v.i., Rozvojová 135, Prague 6, Czech Republic; Institute for Environmental Studies, Faculty of Science, Charles University in Prague, Benátská 2, Prague 2, Czech Republic
Recommended Citation:
Kubelová L,, Vodička P,, Schwarz J,et al. A study of summer and winter highly time-resolved submicron aerosol composition measured at a suburban site in Prague[J]. Atmospheric Environment,2015-01-01,118