Korean Journal of Fisheries and Aquatic Sciences (한국수산과학회지)

The Korean Society of Fisheries and Aquatic Science (한국수산과학회)
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Evaluation of Organic Matter and Trace Metal Contamination in Surface Sediments around the Geum River Estuary using Sediment Quality Guidelines

퇴적물 오염기준을 이용한 금강 하구역 표층 퇴적물내 유기물 및 미량금속 오염 평가

  • Hwang, Dong-Woon (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Lee, In-Seok (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Choi, Minkyu (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Kim, Sook-Yang (Marine Environment Research Division, National Fisheries Research & Development Institute) ;
  • Choi, Hee-Gu (Marine Environment Research Division, National Fisheries Research & Development Institute)
  • 황동운 (국립수산과학원 어장환경과) ;
  • 이인석 (국립수산과학원 어장환경과) ;
  • 최민규 (국립수산과학원 어장환경과) ;
  • 김숙양 (국립수산과학원 어장환경과) ;
  • 최희구 (국립수산과학원 어장환경과)
  • Received : 2013.10.01
  • Accepted : 2013.12.16
  • Published : 2013.12.31
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Abstract

We evaluated contamination with organic matter and trace metals by analyzing grain size, ignition loss (IL), chemical oxygen demand (COD), acid volatile sulfide (AVS), and trace metals (Al, Fe, Cu, Pb, Zn, Cd, Ni, Cr, Mn, Hg, and As) in surface sediments at 28 stations around the Geum River estuary in July 2008. The surface sediments in the estuary were mainly composed of coarse sediment (sand and muddy sand), with mean grain size (Mz) ranging between $2-4{\O}$. The high concentrations of IL, COD, and trace metals were mainly found at stations in front of the Gusan outer port and industrial complex, and near the Seocheon coast with relatively fine sediments. In addition, the concentrations of IL and all trace metals, except Pb and As, showed good positive correlations with Mz, indicating that the concentrations of organic matter and trace metals were mainly dependent on sediment grain size. The concentrations of COD, AVS, and trace metals in most sediments did not exceed the sediment quality guideline (SQGs). Although the sediments in the study region are not polluted with organic matter and trace metals, there are many point sources of pollutants, such as Gusan port and industrial complex, Janghang refinery, and a thermoelectric power plant around the Geum River estuary. Thus, the management of coastal environments through periodic monitoring of organic matter and trace metals is required in the future.

Keywords

References

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