해양환경안전학회지 (Journal of the Korean Society of Marine Environment & Safety)

  • 제26권4호
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  • Pages.392-402
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  • 2020
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  • 1229-3431(pISSN)
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  • 2287-3341(eISSN)
해양환경안전학회 (The Korean Society of Marine Environment and safety)
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살포식 패류양식해역인 진주만 표층 퇴적물의 오염도

Pollution Status of Surface Sediment in Jinju Bay, a Spraying Shellfish Farming Area, Korea

  • 이가람 (국립수산과학원 어장환경과) ;
  • 황현진 (국립수산과학원 어장환경과) ;
  • 김정배 (국립수산과학원 어장환경과) ;
  • 황동운 (국립수산과학원 어장환경과)
  • Lee, Garam (Marine Environment Research Division, National Institute of Fisheries Science) ;
  • Hwang, Hyunjin (Marine Environment Research Division, National Institute of Fisheries Science) ;
  • Kim, Jeong Bae (Marine Environment Research Division, National Institute of Fisheries Science) ;
  • Hwang, Dong-Woon (Marine Environment Research Division, National Institute of Fisheries Science)
  • 투고 : 2020.04.22
  • 심사 : 2020.06.26
  • 발행 : 2020.06.30
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초록

살포식 패류양식해역인 진주만의 퇴적물 중 유기물과 금속의 분포 특성 및 오염상태를 파악하기 위하여 2015년 8월에 산휘발성황화물(AVS), 강열감량(IL), 총유기탄소(TOC), 총질소(TN), 금속원소(As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, Zn)를 조사하였다. 퇴적물 중 유기물과 금속원소의 농도는 패류양식장이 밀집해 있는 만의 남쪽 해역에서 높고, 우리나라 남해안의 다른 해역과 비슷하거나 낮았다. C/N비(5.7~8.0)를 기초로, 진주만 퇴적물의 유기물은 해역 자체에서 생성된 해양기원성인 것으로 파악되었다. 퇴적물 오염평가 결과, 유기물(AVS, TOC)과 금속원소(As, Cd, Cr, Cu, Hg, Pb, Zn) 농도는 우리나라의 퇴적물 기준보다도 상당히 낮았다. 또한, 금속원소 전체 농도를 고려한 오염부하량지수(PLI)와 생태계위해도지수(ERI) 결과는 패류 양식장이 밀집해 있는 남쪽 해역에서 높은 오염도를 보이지만, 대부분의 해역에서 저서생물에 약간 부정적인 생태 영향을 줄 수 있는 오염 상태였다. 그러므로, 진주만 퇴적물은 현재 유기물에 대해서는 오염되지 않았고, 금속원소에 있어서는 약간 오염된 상태인 것으로 파악되었다.

We investigated the concentrations of acid volatile sulfide (AVS), ignition loss (IL), total organic carbon (TOC), total nitrogen (TN), and metallic elements (As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, and Zn), in August 2015, to determine the spatial distribution and pollution status of organic matter and metals in the surface sediment of Jinju Bay, a spraying shellfish farming area, Korea. The concentrations of organic matter and metallic elements were significantly higher in the southern part of the bay than in the mouth and center of the bay. The C/N ratio (5.7~8.0) in the sediment represents the dominance of organic matter of oceanic origin in the surface sediment of the study area. The concentrations of AVS, TOC, and metals (As, Cd, Cr, Cu, Hg, Pb, and Zn) were much lower than the values of the sediment quality guidelines applied in Korea. Based on the results of the pollution load index (PLI) and ecological risk index (ERI), the metal concentrations in the surface sediment of Jinju Bay have a weakly negative ecological effect on benthic organisms although the sediments with high metal pollution status are distributed in the southern parts of the bay, with high dense shellfish farming areas. Thus, the surface sediments in Jinju Bay are not polluted with organic matter and are slightly polluted with metallic elements.

키워드

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