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- W2364332655 abstract "To investigate the chemical characteristics of heavy atmospheric pollution of particulate matter in Beijing,the concentrations of water-soluble inorganic ions were observed using the rapid collection of atmospheric particles and the chemical component online analysis system(RCFP-IC) from 18 to 24 February,2011 during a heavy pollution episode.Combined with the mass concentration of particulate matter,gaseous pollutant concentrations and meteorological data,we analyzed the characteristics of water-soluble inorganic ions in detail for this episode.The results showed that particulate pollution was serious during 4 days of this winter heavy pollution in Beijing.The total concentration of water-soluble inorganic ions was 151.31 μg·m-3 and the relative proportions of PM2.5 was 54%,of which more than 90% was from NO-3,SO2-4 and NH+4.NOR and SOR showed that NO-3 and SO2-4 were generated through the heterogeneous reaction.Water-soluble inorganic salts mainly existed in the form of NH4HSO4 and(NH4)2SO4.The concentrations of K+ and Cl-increased significantly,while Mg2 + and Ca2 + showed an opposite trend during the heavy pollution episode.The average of C/A was 0.8.Fine particles showed acidity." @default.
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- W2364332655 date "2012-01-01" @default.
- W2364332655 modified "2023-09-26" @default.
- W2364332655 title "The variation of water-soluble inorganic ions during a heavy pollution episode in winter,Beijing" @default.
- W2364332655 hasPublicationYear "2012" @default.
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