Environmental Engineering Research

  • 제12권3호
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  • Pages.118-127
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  • 2007
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  • 1226-1025(pISSN)
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  • 2005-968X(eISSN)
대한환경공학회 (Korean Society of Environmental Engineers)
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STUDY ON ATMOSPHERIC BEHAVIOR OF POLYCYCLIC AROMATIC HYDROCARBONS IN URBAN AREA, JEONJU

  • Kim, Hyoung-Seop (Technology Research Center, Korea Environment & Resources Corporation) ;
  • Kim, Jong-Guk (Center for Chemical Safety Management, Chonbuk National University) ;
  • Kim, Kyoung-Soo (Department of Environmental Engineering, Cheongju University)
  • 발행 : 2007.06.21
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초록

Between June and November 2002, the atmospheric concentrations and dry deposition fluxes of polycyclic aromatic hydrocarbons (PAHs) in Chonju were measured four times each over five days. The total concentration of PAHs in ambient air was $84\;ng/m^3$, with about 90% existing in the vapor phase. Plots of log ($K_p$) vs. log (${P_L}^0$) indicated that PAHs partitioning was not in equilibrium and the particulate characteristics did not change with seasonal variations. The PAHs fluxes to a water surface sampler (WSS) and a dry deposition plate (DDP) were about 14.15 and $1.92\;{\mu}g/m^2/d$, respectively. The flux of the gaseous phase, acquired by subtracting the DDP from the WSS results, was about $12.23\;{\mu}g/m^2/d$. A considerable correlation was shown between the atmospheric concentrations and deposition fluxes in the gaseous phase, but not in the particulate phase, as the fluxes of the particulate phase were dependent on the physical velocity differences of the particulates based on the particle diameter.

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