Journal of Korean Society for Atmospheric Environment

Korean Society for Atmospheric Environment (한국대기환경학회)
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Scavenging Properties of Atmospheric Carbon by Precipitation

  • Hwang, Kyung-Chul (Department of Environmental & Life Science, DongNam Health College) ;
  • Ma, Chang-Jin (Department of Socio-Environmental Energy Science, Graduate School of Energy Science) ;
  • Cho, Ki-Chul (Department of Environmental & Life Science, DongNam Health College)
  • Published : 2004.06.01
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Abstract

In order to investigate the scavenging property of airborne carbonaceous particles by precipitations, rainwater, snow sample, and total suspended particulate matter (TSP) were collected at a heavily industrialized urban site. Elemental carbon (EC) contents of both rainwater and snow water were deter-mined using elemental analysis system. EC concentrations in rain samples varied from 33.6 to 166.6 $\mu\textrm{g}$ L$^{-1}$ with an average 47.2 $\mu\textrm{g}$ L$^{-1}$ . On the other hand, those of snow samples in three times snow events were ranged from 122.4 to 293.3 $\mu\textrm{g}$ L$^{-1}$ . As might be expected, EC showed the significantly high scavenging rate at the initial rainfall. The average total carbon (TC) scavenging rate by washout mechanisms was 57.6% for five rainfall events. The scavenging rate of EC gradually increased in proportion to the increasing rainfall intensity and rainfall amount.

Keywords

References

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