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국내 주요 수계 표층 퇴적물 중 HCB와 DDTs의 농도분포 특성에 관한 연구

Study on Contration Distribution of HCB and DDTs in River Sediments of Korea

  • 박종은 (전북대학교 환경공학과) ;
  • 이상천 (경남대학교 나노신소재공학과) ;
  • 홍종기 (경희대학교 약학대학 약학과) ;
  • 김종국 (전북대학교 환경공학과)
  • Park, Jong-Eun (Department of Environmental Engineering, Chonbuk National University) ;
  • Lee, Sang-Chun (Department of Nano Science and Engineering, Kyungnam University) ;
  • Hong, Jong-Ki (College of Pharmacy, Kyung Hee University) ;
  • Kim, Jong-Guk (Department of Environmental Engineering, Chonbuk National University)
  • 투고 : 2012.04.20
  • 심사 : 2012.05.29
  • 발행 : 2012.05.30

초록

본 연구에서는 우리나라 대표적인 4대강 수계의 퇴적물을 대상으로 HCB와 DDTs 농도분포 특성에 대해 검토하였다. HCB 농도는 한강 0.41~3.80(평균 1.58) ng/g, 낙동강 0.08~6.09(평균 0.90) ng/g, 금강 0.02~0.97(평균 0.30) ng/g, 영산강 0.28~0.59(평균 0.42) ng/g, 섬진강 0.23~0.48(평균 0.32) ng/g 으로 검출되었다. DDTs 농도는 한강 0.67~14.20(평균 4.76) ng/g, 낙동강 N.D.~10.36(평균 1.81) ng/g, 금강 N.D.~7.26(평균 1.87) ng/g, 영산강 N.D.~3.12(평균 1.08) ng/g 및 섬진강에서 0.02~2.04(평균 0.56) ng/g으로 검출되었다. 우리나라 하천 퇴적물 중 HCB와 DDTs 농도는 다른 나라의 강이나 하구언 퇴적물 농도와 비교해도 상대적으로 낮게 나타났다. 퇴적물 시료에서 검출된 농도를 미국해양기상연구소가 제시한 퇴적물권고기준치와 비교한 결과 HCB의 농도는 모두 ERL 값에 크게 미치지 않는 것으로 조사되었다. DDTs의 경우 46개 시료에서 ERL(1.58 ng/g)을 초과하는 농도를 나타내어 현재 퇴적물 중 DDTs 농도가 저서생물에 위해한 영향을 줄 것으로 예상되는 수준은 아니나 지속적인 관찰이 요구되는 것으로 판단되었다.

Hexachlorobenzene (HCB) and Dichloro-Diphenyl-Trichloroethane (DDT) were determined in surface sediments collected from main rivers of Korea. Concentration of HCB in sediments ranged from 0.41 to 3.82 (average 1.58) ng/g, 0.08 to 6.09 (average 0.90) ng/g, 0.02 to 0.97 (average 0.30) ng/g, 0.28 to 0.59 (average 0.42) ng/g and 0.23 to 0.48 (average 0.32) ng/g in Han river, Nakdong river, Geum river, Yeongsan and Seomjin river respectively. The DDTs concentration was ranged from 0.67 to 14.20 (average 4.76) ng/g, N.D. to 10.36 (average 1.81) ng/g, N.D. to 7.26 (average 1.87) ng/g, N.D. to 3.12 (average 1.08) ng/g and 0.02 to 2.04 (average 0.56) ng/g in Han river, Nakdong river, Geum river, Yeongsan and Seomjin river respectively. In comparison with the concentration of HCB and DDTs in other studies, the values in sediments of this study were lower than those of other countries. Comparison with that Sediment quality guideline (SQG) of National Oceanic and Atmospheric Administration (NOAA), the HCB levels of this study were very lower than Effect Range Low (ERL) value. In the case of DDTs, the concentrations of 46 points were higher than ERL (1.58 ng/g). It have not harmful effect on ecosystem of the sediment, however ongoing monitoring of sediments is deemed necessary.

키워드

과제정보

연구 과제 주관 기관 : 국립환경과학원

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