Jiaoyan Huang1, Xi Chen2, Chia-Kuan Liu3, Ci-Song Huang3, Guor-Cheng Fang 3

  • 1 Department of Natural Resources and Environmental Sciences, University of Nevada, Reno,1664 N. Virginia Street, Reno, NV 89557, USA
  • 2 Department of Atmospheric Science, Colorado State University, Fort Collins, CO 80526, USA
  • 3 Department of Safety, Health, and Environmental Engineering, Hung-Kuang University, Sha-Lu, Taichung 433, Taiwan

Received: May 22, 2012
Revised: October 9, 2012
Accepted: October 9, 2012
Download Citation: ||https://doi.org/10.4209/aaqr.2012.05.0137  

  • Download: PDF


Cite this article:
Huang, J., Chen, X., Liu, C.K., Huang, C.S. and Fang, G.C. (2013). Ambient Trace Metals Sources in Taichung, Taiwan: Principal Component Analysis. Aerosol Air Qual. Res. 13: 672-679. https://doi.org/10.4209/aaqr.2012.05.0137


 

ABSTRACT


There were eight trace metals, including As, Hg, Mn, Fe, Zn, Cr, Cu, and Pb, measured in the total suspended particles collected in central Taiwan using PS-1 samplers at five different sites. Overall, these trace metal concentrations were lower in summer than other seasons, and higher in industrial areas than in wetland. Principal Component Analysis (PCA) was utilized to identify the pollutant sources for each site. Three distinct sources were found in this study, and the results suggest that mobile sources were the main factor contributing to Mn, Fe, Zn, and Cr emissions, which were mainly from urban areas and in the vicinity of highways intersections. Within addition, municipal solid waste incinerators are significantly associated with emissions of As, Hg, Cu, and Pb. Finally, smelters were associated with high Hg, As, Fe, and Zn emissions from local industrial areas. However, contributions from two known point sources, a coal-fired power plant and a steeling plant could not be distinguished from the PCA results. This may be due to the prevailing wind directions and limitations of the measurements used in this work. These two sources are located to the west of these sampling sites, while the prevailing wind direction in this area was southwest.


Keywords: Principal component analysis; Trace metals; Source identification; Conditional probability function; Central Taiwan


Share this article with your colleagues 

 

Subscribe to our Newsletter 

Aerosol and Air Quality Research has published over 2,000 peer-reviewed articles. Enter your email address to receive latest updates and research articles to your inbox every second week.

Latest coronavirus research from Aerosol and Air Quality Research

2020 Impact Factor: 3.063

5-Year Impact Factor: 2.857

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal, promotes submissions of high-quality research, and strives to be one of the leading aerosol and air quality open-access journals in the world.