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Estimation of Atmospheric Particulates and Dry Deposition Particulate-bound Mercury Hg(p) in Sha-Lu, Taiwan

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Volume: 10 | Issue: 5 | Pages: 403-413
DOI: 10.4209/aaqr.2010.02.0013
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Guor-Cheng Fang , I-Lin Yang, Chia-Kuan Liu

  • Department of Safety, Health and Environmental Engineering, Hung Kuang University, Sha-Lu, Taichung 433, Taiwan


Ambient air samples were collected between March 17, 2009 and May 22, 2009 at a highway traffic site located in Sha-Lu, central Taiwan. Atmospheric particulates and particulate bound mercury Hg(p) dry deposition fluxes, concentrations (PM2.5, PM2.5–10 and TSP ) were studied. The results indicate that the average ambient air particles dry deposition, PM2.5, PM2.5–10 and TSP. concentrations were 145.03 μg/m2-min and 15.47, 9.50, 65.14 μg/m3, respectively. And the average dry deposition, PM2.5, PM2.5–10 and TSP bound mercury Hg(p) concentrations were 0.9519 ng/m2-min and 0.1140, 0.0106, 0.0763 ng/m3, respectively. In addition, the average ambient air particles bound mercury Hg(p) compositions for PM2.5, PM2.5–10 and TSP were 3.60, 3.45 and 44.99 ng/g, respectively. The results indicate that both of these two models (Baklanov and Sorensen, 2001; Zhang et al., 2001) are estimated as the measured dry deposition mass flux. The Baklanov model performs better results in the prediction of mass dry deposition flux. In addition, both of these two models slightly underestimate the measured dry deposition mass flux for particle bound Hg(p). Zhang’s model performs better results in the prediction of Hg(p) dry deposition flux.


Particle bound mercury Dry deposition model Baklanov and Sorensen’s model Zhang’s model

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