Kuan-Foo Chang1, Guor-Cheng Fang 2, Chungsying Lu1, Hsunling Bai3

  • 1 Department of Environmental Engineering, National Chung-Hsing University, Taichung 402, Taiwan
  • 2 Air Toxic and Environmental Analysis Laboratory, Hungkuang University, Sha-Lu, Taichung 433, Taiwan
  • 3 Institute of Environmental Engineering, National Chiao-Tung University, Hsinchu 300, Taiwan

Received: May 31, 2003
Revised: May 31, 2003
Accepted: May 31, 2003
Download Citation: ||https://doi.org/10.4209/aaqr.2003.06.0005  

  • Download: PDF

Cite this article:
Chang, K.F., Fang, G.C., Lu, C. and Bai, H. (2003). imating PAH Dry Deposition by Measuring Gas and Particle Phase Concentrations in Ambient Air. Aerosol Air Qual. Res. 3: 41-51. https://doi.org/10.4209/aaqr.2003.06.0005



Concentrations of the total polycyclic aromatic hydrocarbons (PAHs) in both the gas-phase and particle-phase were measured simultaneously in industrial, urban and suburban areas, and were 1652, 1185, and 834 ng/m3, respectively. PAHs with two to four-ring were distributed more than 94% in the gas-phase of all sampling sites. Meanwhile, for PAHs with five to seven-ring, less than 70% were distributed in the gas-phase of the three sites. Approximately two-thirds of the three most hazardous PAHs (BbF + BaP + DBA) were distributed in the gas-phase at the TIP and NCHU, and only one-third of BbF + BaP + DBA were distributed in the gas-phase at the THU. Total dry deposition flux was mainly contributed, with a proportion of between 53.3% and 63.4%, by PAHs with three to four-ring at the three sites. For LMW PAHs, the gas-phase PAHs contribute over 87% to the dry deposition flux at the three sites. Meanwhile, the particle-phase PAHs contribute more than 86% and 99% to the dry deposition flux of the MMW and HMW PAHs, respectively. The mean dry deposition velocities were 0.01, 0.24, 0.47, 0.76, 0.84 and 0.88 cm/s for two to seven-ring PAH homologue. Notably, the dry deposition velocity of the HMW PAHs was significantly higher than that of the LMW PAHs at the three sampling sites. The dry deposition velocities of BbF + BaP + DBA PAHs were 0.8, 0.64 and 1.02 cm/s at the TIP, NCHU and THU, respectively. Accordingly, hazardous PAHs with high dry deposition velocities are threatening to human health by dry deposition.

Keywords: PAHs; Dry deposition flux; Dry deposition velocity

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.