The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY (한국해양학회지:바다)

The Korean Society of Oceanography (한국해양학회)
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Distribution of Organic Matter and Trace Metals in Surface Sediments and Ecological Risk Assessment in the Tongyeong Coast

통영연안 표층퇴적물에서의 유기물과 미량금속 분포 특성 및 생태위해성 평가

  • YANG, WON HO (Department of Marine Environmenntal Engineering, Gyeongsang National University) ;
  • LEE, HYO JIN (Department of Marine Environmenntal Engineering, Gyeongsang National University) ;
  • KIM, GI BEUM (Department of Marine Environmenntal Engineering, Gyeongsang National University)
  • 양원호 (경상대학교 해양환경공학과) ;
  • 이효진 (경상대학교 해양환경공학과) ;
  • 김기범 (경상대학교 해양환경공학과)
  • Received : 2016.07.09
  • Accepted : 2016.11.09
  • Published : 2016.11.30
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Abstract

We investigated the distribution of organic matter and trace metals in surface sediment from Tonyeong coast. To determine the status of trace metal pollution, we also conducted an ecological risk assessment. Relatively high concentration of TN (total nitrogen), TOC (total organic carbon), and AVS (acid volatile sulfide) was found in surface sediment located in the narrow channel (site 35-38). Spatial distribution of Cd, Cr, Ni, Co, Hg, and Zn in surface sediment was similar and high Cu concentrations were found in narrow channel. The assessment of heavy metal pollution was derived using the Enrichment factors (EF). The enrichment factor indicated that Cd was no enrichment (EF<1), Pb, Cr, Ni, Co, Zn, and Hg were minor enrichment (1

본 연구는 통영연안의 오염 현황을 파악하기 위하여 표층퇴적물의 유기물 분포 특성, 미량금속의 공간적인 분포 특성과 오염도 및 생태계 위해성평가를 하였다. 총질소(Total nitrogen, TN), 총유기탄소(Total organic carbon, TOC)와 산 휘발성 황화물(Acid volatile sulfide, AVS)은 협수로에 위치한 정점 35-38에서 높은 농도를 나타내었다. Cd, Cr, Ni, Co, Hg, Zn의 공간적 분포양상은 유사하였으며, 이와 달리 Cu는 협수로에서 높은 농도를 나타내었다. 미량금속 원소의 오염도를 농축계수(Enrichment Factor, EF)로 평가한 결과, Cd이 모든 정점에서 오염되지 않은 상태(No enrichment), Pb, Cr, Ni, Co, Zn, Hg이 약간 오염상태(Minor enrichment), Cu가 약간~중간 오염상태(minor-moderate enrichment)의 오염도를 나타냈다. 미량금속에 의한 생태위해성 수준은 오비도와 미륵도 사이의 협수로 정점에서 국지적으로 생태계에 잠재적 위해성이 있는 것으로 나타났다.

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