해안도시의 도로먼지에 함유된 중금속의 분포와 연근 해역에 미치는 영향

Abstract

Heavy metals in 9 road dusts collected in a beach town of Busan, Korea, were assessed to investigate heavy metal distributions in road dust and to assess their potential effects to adjacent coastal environment. The road dusts are contaminated with heavy metals. The contamination level is relatively similar or higher than that of other polluted cities. Zn, Cu, Cr and Pb concentrations are higher than other elements, Li, Co, Ni, As and Cd, in road dusts from this area. Zn is most enriched metal in road dusts followed by Cd and Pb. The ratios of bioavailability fractions of heavy metals from road dust varied from 8%(Li) to 97%(Cu). The most extractable elements, by rain water, were Cu, Zn and Cr among the heavy metals in road dusts collected this area, indicating that those metals can be pollution source of the adjacent estuary.inated with heavy metals. The contamination level is relatively similar or higher than that of other polluted cities. Zn, Cu, Cr and Pb concentrations are higher than other elements, Li, Co, Ni, As and Cd, in road dusts from this area. Zn is most enriched metal in road dusts followed by Cd and Pb. The ratios of bioavailability fractions of heavy metals from road dust varied from 8%(Li) to 97%(Cu). The most extractable elements, by rain water, were Cu, Zn and Cr among the heavy metals in road dusts collected this area, indicating that those metals can be pollution source of the adjacent estuary.