용호만 매립지에 인접한 도시와 연안의 중금속과 유기염소계 화합물에 관한 연구

Abstract

Road dusts, gully sludges and marine sediments were sampled in reclaimed urban areas and adjacent estuary of Yongho Bay, South Korea. They were analyzed for total concentrations of heavy metals and organochlorines to investigate their distributions and pollution levels in both regions, and to identify their origins for effective management of this estuary. Among the heavy metal concentrations analyzed, Cr, Zn, As, Cd and Pb from the road dust samples exceeded their threshold effects levels, and Ni, Cu, Zn, As and ΣPCBs from the marine sediment samples exceeded their threshold effects levels. The measured concentrations of Cr, Cu, Zn, As and Pb in the road dust samples were higher than those of marine sediments, implying these terrestrial pollutants might be influential sources of Yongho Bay. In addition, significantly correlation between these metals was showed in all samples in this study (p < 0.05). Results show that the concentrations of heavy metals in marine sediments significantly correlated to those in road dusts and gully sludges (p < 0.001). The Σ35PCBs values detected in marine sediments were higher than gully sludges and road dust samples, and were significantly correlated to Ni and Cd levels in all samples (p < 0.05). Results of this study showed that the pollution of Yongho bay, an adjacent reclaimed land, was contributed by artificial terrestrial sources. The results of thiistributions and pollution levels in both regions, and to identify their origins for effective management of this estuary. Among the heavy metal concentrations analyzed, Cr, Zn, As, Cd and Pb from the road dust samples exceeded their threshold effects levels, and Ni, Cu, Zn, As and ΣPCBs from the marine sediment samples exceeded their threshold effects levels. The measured concentrations of Cr, Cu, Zn, As and Pb in the road dust samples were higher than those of marine sediments, implying these terrestrial pollutants might be influential sou