한국해양환경ㆍ에너지학회지 (Journal of the Korean Society for Marine Environment & Energy)

  • 제17권2호
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  • Pages.131-145
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  • 2014
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  • 2288-0089(pISSN)
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  • 2288-081X(eISSN)
한국해양환경•에너지학회 (The Korean Society for Marine Environment and Energy)
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Artificial mussel을 이용한 우리나라 연안환경의 중금속 오염도 연구

Application of the Artificial Mussel for Monitoring Heavy Metal Levels in Seawater of the Coastal Environments, Korea

  • 나공태 (한국해양과학기술원 해양환경.보전연구부) ;
  • 김종근 (한국해양과학기술원 해양환경.보전연구부) ;
  • 김경태 (한국해양과학기술원 해양환경.보전연구부) ;
  • 이승용 (한국해양과학기술원 해양환경.보전연구부) ;
  • 김은수 (한국해양과학기술원 기기검교정.분석센터) ;
  • 이정무 (한국해양과학기술원 기기검교정.분석센터) ;
  • Ra, Kongtae (Marine Environments and Conservation Research Division, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Kim, Joung-Keun (Marine Environments and Conservation Research Division, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Kim, Kyung-Tae (Marine Environments and Conservation Research Division, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Lee, Seung-Yong (Marine Environments and Conservation Research Division, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Kim, Eun-Soo (Oceanographic Measurement and Instrument Calibration Service Center, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Lee, Jung-Moo (Oceanographic Measurement and Instrument Calibration Service Center, Korea Institute of Ocean Science and Technology (KIOST)) ;
  • Wu, Rudolf S.S. (School of Biological Sciences, The University of Hong Kong)
  • 투고 : 2014.03.25
  • 심사 : 2014.04.25
  • 발행 : 2014.05.25
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초록

본 연구에서는 artificial mussel(AM)을 우리나라 해양환경에 처음으로 활용하여 수환경 내 중금속 오염도를 모니터링 하였다. 조사지역으로는 특별관리해역인 시화호 내측 5개 정점을 선정하였으며, AM과 홍합(Mytilus edulis)을 총 12주간 이식실험을 진행함으로써, AM과 홍합 내 지역 및 시간에 따른 중금속(Cd, Cr, Cu, Pb 및 Zn)의 오염도 및 농축특성에 대하여 조사하였다. AM과 홍합 모두 시간에 따라 농도가 증가하였으며, Zn의 축적이 다른 중금속 원소에 비해 높았다. Cd, Cu 및 Pb는 AM과 홍합간 유의한 상관성을 보였으나, Cr과 Zn는 상관성이 없는 것으로 나타났다. 해수 중 용존 중금속과 AM 및 홍합 내 중금속 간의 상관분석결과, Cd, Cu 및 Zn는 홍합보다 AM과 상대적으로 좋은 상관성을 보이고 있는 것으로 나타났다. 12주의 이실실험 후 AM이 홍합에 비해 뚜렷한 지역적 차이를 보이고 있어 해수 중 용존 중금속 농도를 직접적으로 반영하고 있음을 알 수 있었다. 따라서 AM은 우리나라 해양환경의 시 공간적인 중금속 오염도 연구에 모니터링 도구로 사용가능하며, 물리, 화학적인 요인에 적은 영향을 받으므로, 담수를 포함한 다양한 수 환경 중금속 오염 연구에 활동도가 매우 높을 것으로 기대된다.

The new passive sampler called "artificial mussel (AM)" offers a potential device to study the spatiotemporal changes of metal concentrations in different marine environment worldwide. The purpose of this study is to characterize metal (Cd, Cr, Cu, Zn, Pb) accumulation on the AM and transplanted mussel (Mytilus edulis) at 5 sites of Lake Shihwa. Both the AMs and mussels showed increasing concentrations of all five metals during the 12 weeks exposure period. Higher concentrations of Zn were showed in both the AMs and Mytilus edulis relative to other metals. The AMs accumulated higher concentrations of Cd, Cr and Zn, but they presented lower levels of Cu and Pb than Mytilus edulis. The correlations for Cd, Cu and Pb were statistically significant between the AMs and Mytilus edulis, indicating that the accumulation patterns for those metals were similar. However, no similarities for Cr and Zn were observed between two monitoring devices across all of the sites in Shihwa Lake. According to relationship for metal concentrations between dissolve phase in seawater and both the AMs and Mytilus edulis, the AMs for Cd, Cu and Zn represent more metal contamination than Mytilus edulis. Our results indicated that the AMs give a better resolution to reveal the spatial differences in dissolved metal concentration. This study suggests that the AMs can provide a time-integrated estimate of metal pollution in marine environments as well as freshwater environments of Korea.

키워드

참고문헌

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