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



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.

77st percentile
Powered by
   SCImago Journal & Country Rank

2022 Impact Factor: 4.0
5-Year Impact Factor: 3.4

Aerosol and Air Quality Research partners with Publons

CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit
CLOCKSS system has permission to ingest, preserve, and serve this Archival Unit

Aerosol and Air Quality Research (AAQR) is an independently-run non-profit journal that promotes submissions of high-quality research and strives to be one of the leading aerosol and air quality open-access journals in the world. We use cookies on this website to personalize content to improve your user experience and analyze our traffic. By using this site you agree to its use of cookies.