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A Study On Heavy Metal Contamination in the Different Size Fractions of Deposited Road Particles(DRPs)

노면퇴적물의 입자 크기에 따른 중금속 오염에 관한 연구

  • Kim, Boo-Gil (Division of Architecture md Civil Engineering, Dongseo University) ;
  • Lee, Byung-Cheol (Department of Environment Research, Korea Institute of Construction Technology)
  • 김부길 (동서대학교 건축토목시스템공학부) ;
  • 이병철 (한국건설기술연구원 국토환경연구부)
  • Published : 2006.12.31

Abstract

Deposited road particles (DRPs) were analysed for heavy metal concentrations at four different roads in a city, Korea. The samples were collected using a roadway surface vacuum cleaning vehicle which was commonly used in collecting roadway surface particles. Six particle size ranges were analyzed separately for twelve heavy metal elements (Cd, Cr, Pb, Ni, Al, As, Co, Cu, Fe, Mn, Zn and Hg). At all sampling sites, the high concentration of the heavy metals occurred in the <74um particle size range, which conventional roadway cleaning vehicles do not remove efficiently. The Pb concentration significantly increased with decreasing particle size of DRPs, and other toxic heavy metals (Cd, Cr and Ni) also showed similar results. The heavy metal concentrations in the smaller size fraction of DRPs is important because they are contaminants that are preferentially transported by road runoff during rainfall.

Keywords

Heavy metal;Deposited road particles(DRPs);Road runoff

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