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

The Korean Society for Marine Environment and Energy (한국해양환경•에너지학회)
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Distribution of Dissolved Heavy Metals in Surface Seawaters Around a Shipyard in Gohyun Bay, Korea

고현만의 조선소 주변 표층해수 중의 용존 중금속 농도 분포

  • Kim, Kyung Tae (Mrine Chemistry & Geochemistry Division, Korea Institute of Ocean & Technology) ;
  • Ra, Kongtae (Mrine Chemistry & Geochemistry Division, Korea Institute of Ocean & Technology) ;
  • Kim, Joung Keun (Mrine Chemistry & Geochemistry Division, Korea Institute of Ocean & Technology) ;
  • Kim, Eun Soo (Ocean Observation & Operation Management Division, Korea Institute of Ocean & Technology) ;
  • Kim, Chong Kwan (Biological Oceanography & Marine Biology Division, Korea Institute of Ocean & Technology) ;
  • Shim, Won Joon (South Sea Research Institute, Korea Institute of Ocean & Technology)
  • 김경태 (한국해양과학기술원 화학연구본부) ;
  • 나공태 (한국해양과학기술원 화학연구본부) ;
  • 김종근 (한국해양과학기술원 화학연구본부) ;
  • 김은수 (한국해양과학기술원 해양관측.운영본부) ;
  • 김종관 (한국해양과학기술원 생물연구본부) ;
  • 심원준 (한국해양과학기술원 남해연구소)
  • Received : 2015.01.30
  • Accepted : 2015.02.11
  • Published : 2015.02.25
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Abstract

The spatial and temporal distribution of dissolved trace metals has been studied to identify trends in space and time and to evaluate the pollution status in a semi-closed bay (Gohyun bay), Korea. Surface seawater samples were collected over four seasons at 18 stations in the bay between 2003 and 2004 and once at 7 stations around a large shipyard in May 2004. The concentration of Cd, Co, Cu, Ni, Pb, and Zn in seawater in February and May were highly variable in space, showing the higher value relative to other season. Those metals concentrations were decreased from inner-to outer-stations. In around the shipyard, Cu, Pb and Zn showed the higher variability depending on time. Cu and Zn concentrations at the sites around the shipyard had 2 times higher values compared with the average of inner stations in Gohyun bay. The very high correlations between salinity and either Cu and Zn has been showed. Especially, there was a significant relationship between Cu and Zn. We recognize that the shipyard is major source of Cu and Zn in seawater. Therefore, marine environment management policy such as the prevention and control of heavy metal input from a shipyard is required.

남해안 반폐쇄성 해역인 고현만 주변의 용존 중금속 오염과 시공간적 변화 경향을 파악하기 위하여 연구를 수행하였다. 해수 시료는 고현만에서 2003~2004년 사이에 18개 정점에서 계절별로 총 4회, 조선소 주변 7개 정점에서 2004년 3월에 1회 채취하였다. 고현만에서 2월과 5월의 해수 중 용존 Cd, Co, Cu, Ni, Pb와 Zn의 농도는 다른 시기보다 상대적으로 높은 농도를 나타내면서 공간적으로 큰 차이를 보였다. 이들 중금속은 만 내측 정점에서 외측정점으로 갈수록 감소하였으며, 조선소 주변에서 Cu, Pb, Zn은 시기에 따라 큰 변화를 보였다. 조선소에 인접한 정점의 Cu와 Zn 농도는 고현만 내측의 평균보다 2배 높은 농도를 나타내었다. Cu와 Zn은 염분과 높은 상관성을 보였으며, Cu와 Zn간에도 매우 높은 상관성을 보였다. 이러한 결과는 조사해역에서 Cu, Zn의 고농도는 조선소가 주요 오염원으로 영향을 미치고 있음을 지시한다. 따라서 조선소에 의한 중금속 오염 방지를 위한 해양환경관리 정책이 마련되어야 한다.

Keywords

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