Volume 9 Issue 5
Sep.  2019
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Article Navigation >  Journal of Environmental Engineering Technology  > 2019  >  9(5): 538-543
WU Fan, SHAO Longyi, LU Jing, XI Chunxiu, CHANG Lingli, GAO Qiusheng. Characteristics of the water-soluble inorganic ions of indoor PM2.5 in Xuanwei City in winter[J]. Journal of Environmental Engineering Technology, 2019, 9(5): 538-543. doi: 10.12153/j.issn.1674-991X.2019.03.220
Citation: WU Fan, SHAO Longyi, LU Jing, XI Chunxiu, CHANG Lingli, GAO Qiusheng. Characteristics of the water-soluble inorganic ions of indoor PM2.5 in Xuanwei City in winter[J]. Journal of Environmental Engineering Technology, 2019, 9(5): 538-543. doi: 10.12153/j.issn.1674-991X.2019.03.220
shu

Characteristics of the water-soluble inorganic ions of indoor PM2.5 in Xuanwei City in winter

doi: 10.12153/j.issn.1674-991X.2019.03.220
  • 1.

    College of Geoscience and Surveying Engineering, China University of Mining and Technology, Beijing 100083, China

  • 2.

    Water Environment Management and Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China

More Information
  • Corresponding author: Longyi SHAO E-mail: shaol@cumtb.edu.cn
  • Received Date: 2018-12-16
  • Publish Date: 2019-09-20
    Abstract
  • A total of 48 sets of PM2.5 samples of atmospheric fine particles were collected indoors during the winter of 2016 in two villages of Xuanwei City, Yunnan Province. The mass concentrations of PM2.5 were obtained by weighing. Eight kinds of water-soluble inorganic ions, including Na +, $NH^{+}_{4}$, K +, Mg 2+, Ca 2+, Cl -, $NO^{-}_{3}$ and $SO^{2-}_{4}$, were analyzed by ion chromatography. The results showed that the daily average concentrations of PM2.5 in old coal-fired households in Xuanwei ranged from 52.5 to 417.0 μg/m 3 and those in new electrical households ranged from 43.6 to 77.9 μg/m 3. The daily average concentrations of water-soluble inorganic ions in old coal-fired households ranged from 21.90 to 68.90 μg/m 3, and the mass concentration levels of eight water-soluble inorganic ions were in the order of Cl ->Na +>$NO^{-}_{3}$ >$SO^{2-}_{4}$ >$NH^{+}_{4}$ >K ++Ca 2++Mg 2+. The daily average mass concentrations of water-soluble inorganic ions in new households ranged from 12.53 to 48.04 μg/m 3 and the mass concentration levels of eight water-soluble inorganic ions were in the order of $NO^{-}_{3}$>$SO^{2-}_{4}$ >Cl ->Na +>$NH^{+}_{4}$ >K +>Ca 2+>Mg 2+. The indoor PM2.5 concentration and water-soluble inorganic ion concentration in the old coal-fired households were higher than that of new electrical households in Xuanwei City. Coal burning was the main source of indoor air pollution.

     

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