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  • Title: [Characteristics of Water-soluble Inorganic Ions in PM2.5 and PM2.5-10 in Mountain Background Region of East China in Spring].
    Author: Su BB, Zhang ZS, Tao J, Xu JY, Ji XX, Liu XD, Zhang RY.
    Journal: Huan Jing Ke Xue; 2015 Apr; 36(4):1195-201. PubMed ID: 26164890.
    Abstract:
    PM2.5 and PM2.5-10 samples were collected during March to May of 2014 at the National atmospheric background monitoring station (Wuyishan station) in Fujian Province. Water-soluble inorganic ions in PM2.5 and PM2.5-10 were determined. Meteorological parameters and air pollutants including SO2, NO2, O3, PM10 and PM2.5 were also recorded. The results showed the total water-soluble inorganic ions concentrations were (8.3 ± 2.8 ) μg x m(-3) and (1.3 ± 0.9) μg x m(-3), which accounted for (43.7 ± 7.5) % and (24.4 ± 6.4) % of the PM2.5 and PM2.5-10 mass, respectively. Sulfate and nitrate were the dominant ions in PM2.5 and PM2.5-10, respectively, which accounted for (32.4 ± 6.3) % and (8.9 ± 3.7) % of them, respectively. Sulfate mainly existed in fine particle in the forms of (NH4)2SO4 and K2SO4, while nitrate mainly existed in coarse particle in the form of Mg(NO3)2. The water-soluble inorganic ions at the Wuyishan background monitoring station in spring mainly came from long-distance transportation of dust , sea salt and pollutant of heavy polluted regions.
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