These tools will no longer be maintained as of December 31, 2024. Archived website can be found here. PubMed4Hh GitHub repository can be found here. Contact NLM Customer Service if you have questions.


Pubmed for Handhelds

PUBMED FOR HANDHELDS

Search MEDLINE/PubMed

  • Title: [Characteristics and Sources of Water Soluble Inorganic Ions in Fine Particulate Matter During Winter in Xuzhou].
    Author: Fan MY, Cao F, Zhang YY, Bao MY, Liu XY, Zhang WQ, Gao S, Zhang YL.
    Journal: Huan Jing Ke Xue; 2017 Nov 08; 38(11):4478-4485. PubMed ID: 29965390.
    Abstract:
    A total of 32 daily PM2.5 samples were collected from December 2016 to February 2017 in the urban area of Xuzhou city. Water-soluble inorganic ions (WSⅡs), including F-, Cl-, NO3-, SO42-, Na+, Mg2+, NH4+, K+ and Ca2+, were determined by ion chromatography. The average mass concentration of PM2.5 was (164.8±77.3) μg·m-3 and the average total mass concentration of the nine ions was (67.5±36.1) μg·m-3, the contribution of the WSⅡs to the PM2.5 was more than 40.9%. The order of the concentrations of individual ions was NO3- > SO42- > NH4+ > Cl- > Ca2+ > K+ > Na+ > Mg2+ > F-. NH4+, NO3-, and SO42- (SNA) were the major components of the water-soluble ions in the PM2.5 measurement. The average mass concentration of WSⅡs in clean air, mild haze, and severe haze was (12.8±8.8), (59.0±22.8) and (86.3±36.0) μg·m-3, respectively. The contribution of SNA to WSⅡs was 86.4%, 82.8%, and 78.9%, respectively. The correlation between each component of SNA with each other was significant. NH4+, NO3-, and SO42- were in the form of (NH4)2SO4 and NH4NO3. Secondary formation, biomass burning, fossil fuel combustion, and dust were the major sources of the water-soluble ions in PM2.5.
    [Abstract] [Full Text] [Related] [New Search]