Guor-Cheng Fang 1, Cheng-Nan Chang2, Yuh-Shen Wu1, Peter Pi-Cheng Fu3, Chi-Dong Chen2, Shyh-Chyi Chang2

  • 1 Air Toxic and Environmental Analysis Laboratory, Hungkuang Institute of Technology, Sha-Lu, Taichung 433, Taiwan, R.O.C.
  • 2 Department of Environmental Science, Tunghai University, Taichung 407, Taiwan, R.O.C.
  • 3 Division of Biochemical Toxicology, National Center for Toxicological Research, Jefferson, Arkansas 72079, U.S.A.

Received: May 31, 2002
Revised: May 31, 2002
Accepted: May 31, 2002
Download Citation: ||https://doi.org/10.4209/aaqr.2002.06.0005  

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Cite this article:
Fang, G.C., Chang, C.N., Wu, Y.S., Fu, P.P.C., Chen, C.D. and Chang, S.C. (2002). Study of Water-Soluble Ions in Ambient Air Suspended Particles in Taichung, Taiwan. Aerosol Air Qual. Res. 2: 41-52. https://doi.org/10.4209/aaqr.2002.06.0005


 

ABSTRACT


This experiment was conducted during November in 2000 and February in 2001 in Taichung, central Taiwan. The study used a TE-PUF sampler, Universal air sampler and MOUDI (Micro-Orifice Uniform Deposit Impactor) sampler to collect the ambient air suspended particles and analyzed their water-soluble ions (Cl-, NO3-, SO42-, Na+, NH4+, K+, Mg2+ and Ca2+). Analytical results indicate that the mean mass concentration for PM2.5, PM2.5-10 and TSP measured at the CCRT (traffic) sampling site are 54.5, 27.8 and 158 μm/m3, respectively. Additionally, the mean mass concentration for PM2.5, PM2.5-10 and TSP measured at the THUC sampling site are 23.6, 16.3 and 85.6 μm/m3, respectively. Furthermore, the major water-soluble ion of PM2.5 measured in this sampling region are SO42- and NH4+, while those of PM2.5-10 are Cl-, NO3- and SO42-, respectively. At the CCRT (traffic) sampling site, the mean size distributions of mass, SO42- and NH4+ exhibit a bimodal distribution whereas those of Cl-, NO3-, Na+, K+, Mg2+ and Ca2+ have a bimodal distribution. At the THUC (campus) sampling site, the mean size distributions of mass, Cl-, NO3-, SO42- and Ca2+ are bimodal whereas those of Na+, NH4+, K+ and Mg2+ have display a unimodal distribution.


Keywords: Suspended particles; Anion; Cation; Size distribution; Relationship

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