Ocean and Polar Research

Korea Institute of Ocean Science & Technology (한국해양과학기술원)
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Contamination Status and Characteristics of Persistent Organochlorine Pesticides in the Saemangeum Environment

새만금 해양환경에서의 잔류성 유기염소계 농약의 분포 및 특성

  • 홍상희 (한국해양연구원 남해연구소) ;
  • 심원준 (한국해양연구원 남해연구소) ;
  • 이동호 (한국해양연구원 남해연구소) ;
  • 임운혁 (한국해양연구원 남해연구소) ;
  • 오재룡 (한국해양연구원 남해연구소) ;
  • 김은수 (한국해양연구원 해양환경연구본부)
  • Published : 2006.09.30
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Abstract

To assess the contamination status of organochlorine pesticides in the marine environment of Saemangeum, surface seawater and sediments were collected and analyzed. Organochlorine pesticides were widely distributed in the Saemangeum environment, with DDT, HCH and endosulfan II contamination being particularly prevalent. The overall concentrations of DDTs, HCHs, and endosulfan II in surface seawater were in the rage of 0.03-0.65ng/l (mean value: 0.36ng/l), 1.31-4.54ng/l (2.63 ng/l), and not detected (ND)-0.96ng/l (0.49ng/l), respectively. Among the target organochlorine pesticides, endosulfan II showed the hi띤est level at the river mouth flowing into the Saemangeum. Additionally, its negative gradient from the rivers to the outside and a good correlation with $NO_3^-$ indicate that endosulfan ll inflows to the Saemangeum through the river; this conclusion is also supported by the elevated levels of endosulfan II in sediments at the river mouth. In sediment, the concentration of DDTs, HCHs, CHLs, and endosulfan II were in the range of 0.05-1.96 ng/g, 0.03-0.31ng/g, 0.01-0.13ng/g, and ND-0.62ng/g, respectively. Levels of contamination in Saemangeum are relatively lower than the median concentrations previously observed at the Korean coastal regions and sediment quality guidelines suggested by NOAA (Long et at. 1995).

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