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  • Chemical characteristics of fine particulate matters measured . . .
    In order to investigate the chemical characteristics of atmospheric aerosol measured during a severe winter haze event, 12-hr PM2 5 (particulate matter with an aerodynamic diameter < or = 2 5 microm) samples were collected at an urban site in Ulaanbaatar Mongolia, from January 9 to February 17, 2 …
  • Characterizing remarkable changes of severe haze events and . . .
    Compared with the well-documented severe haze in January 2013, 2016–2017 winter haze was characterized by more stagnant synoptic conditions, sustained accumulation growth of PM enhanced by secondary reactions and regional contribution, as well as prominent fine particles mainly constituted by high concentrations of carbonaceous aerosol
  • Examining the physical and chemical contributions to size . . .
    The monitored hour mass concentration of fine particulate matter (PM 2 5) in Northern China and Northern India in the winter during 2013 to 2018 showed that the PM 2 5 mass concentration
  • The variation of chemical characteristics of PM2. 5 and PM10 . . .
    The lower contribution of total elements to fine particles during haze days possibly suggested an enhanced role of new formation of secondary aerosol from gaseous pollutant precursors during the haze episodes
  • Chemical Characteristics of PM2. 5 and PM10 in Haze−Fog . . .
    Discussion and figures regarding day−night differences of the chemical species in PM 2 5 and PM 10, and compositional differences of the chemical species between fine and coarse particles; table of correlations between chemical species in PM 2 5 and meteorological conditions
  • Sources and Chemical Composition of Particulate Matter During . . .
    Understanding of the temporal and spatial profiles of chemical composition and sources of fine particulate matter (PM), the mechanisms and atmospheric processes of substantial wintertime secondary aerosol production and the constraint of sources and formation processes of secondary organic aerosol (SOA) during haze events are essential for the
  • Characteristics of Haze Pollution Episodes and Analysis of a . . .
    Airborne aerosols, such as sulfate, nitrate, ammonium, organic matter (OM), black carbon (BC) and other chemical compositions, can scatter or absorb the incident light, leading to degradation of atmosphere opacity and horizontal visibility and haze formation





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