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새만금 해양환경에서의 잔류성 유기염소계 농약의 분포 및 특성

Contamination Status and Characteristics of Persistent Organochlorine Pesticides in the Saemangeum Environment

홍상희|심원준|이동호|임운혁|김은수|오재룡
한국해양과학기술원 (Korea Institute of Ocean Science & Technology)|2006.09|Ocean and Polar Research|제28권 제3호|pp. 317-329

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주제분류해양학

초록

Abstract

To assess the contamination status of organochlorine pesticides in themarine 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 0.03-0.65 ng/l (mean value: 0.36 ng/l), 1.31-4.54 ng/l (2.63 ng/l), and not detected (ND)-0.96 ng/l (0.49 ng/l), respectively. Among the target organochlorine pesticides, endosulfan II showed the highest level at the river mouth flowing into the Saemangeum. Additionally, its negative gradient from the rivers to the outside and a good correlation with NO3-indicate that endosulfan II 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, 0.03-0.31 ng/g, 0.01-0.13 ng/g, and ND-0.62 ng/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 al. 1995).

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