Characterization and Identification of Inorganic Water-Soluble Ions in PM_2.5

Abstract:

PM_2.5 and ionic components have been measured from summer 2009 to winter 2010 in the suburb of Shenzhen. Serious PM2.5 pollution was observed, especially in winter. SO42-, NO3- and NH4+ in winter were the predominant ions in PM2.5. In summer, the mean contributions of SO₄^2-, NO_3^- and NH4+ to PM2.5 decreased, while the contributions of Cl- and metal ions increased significantly. Furthermore, ion balance, ratio analysis and correlation analysis were conducted to identify the sources of ions in PM2.5.

• Periodical: Applied Mechanics and Materials (Volumes 260-261)
• Pages: 748-753
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.260-261.748
• Online since: December 2012
• Authors: Wei Dai, Jia Qi Gao, Bo Wang, Feng Ouyang
• Keywords: Correlation Analysis, Inorganic Water-Soluble Ions, Ion Balance, PM_2.5, Ratio Analysis

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