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

The Korean Society of Oceanography (한국해양학회)
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Heavy Metal Contamination in Sediments by Herbei Sprit Oil Spill

허베이 스피리트 원유 유출 사고에 의한 퇴적물의 중금속 오염

  • Song, Yun Ho (Department of Ocean Environmental Science, Chungnam National University) ;
  • Choi, Man Sik (Department of Ocean Environmental Science, Chungnam National University) ;
  • Woo, Jun Sik (Geosystem Research Corporation) ;
  • Sim, Won Joon (Oil and POPs Research Group, South Sea Research Institute, KIOST)
  • 송윤호 (충남대학교 해양환경과학과) ;
  • 최만식 (충남대학교 해양환경과학과) ;
  • 우준식 (지오시스템리서치) ;
  • 심원준 (한국해양과학기술원 유류 및 유해물질연구단)
  • Received : 2013.03.22
  • Accepted : 2013.05.14
  • Published : 2013.05.28
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Abstract

Since crude oil contains various pollutants including heavy metals, the environmental impact should be assessed for heavy metals as well as oil itself. In order to estimate the extent of heavy metal contamination, surface sediments were collected at the intertidal and coastal zone around the Herbei sprit oil spill area during December 2007 and January 2008. Organic carbon, sulfur and heavy metals were determined to assess heavy metal contamination in sediments. The crude oils contained C, S, V and Ni, but little toxic metals such as As, Cd, etc. From organic carbon content, the highest contaminated site was estimated that oils contributed to sediments up to 10%, and this site showed high V concentration. Potentially contaminated sediments by crude oil could be differentiated from unaffected sediments through V/Al and Ni/Al ratios, which can be used as indicators of oil contamination even after the oils were fully degraded.

원유 유출 사고 시 원유에 의한 생태계 영향 뿐만 아니라 원유에 포함된 중금속에 의한 오염도 평가되어야 한다. 허베이 스프리트호 유출 해역 부근의 조간대 및 연안역에서 사고 직후인 2007년 12월, 2008년 1월에 표층 퇴적물을 채취하였고 유기탄소, 황 및 금속 원소들을 정량하여 원유에 의한 퇴적물의 중금속 오염을 평가하고자 하였다. 원유에는 C, S 및 V, Ni가 함유되어 있었고, As, Cd 등 유해한 금속은 함유되어 있지 않았다. 유기탄소 농도로 보았을 때 오염이 가장 심한 정점은 원유의 영향이 약 10% 정도인 것으로 추정되었으며, 이 정점에서는 다른 정점들에 비해 높은 V 농도를 보였다. 금속간의 비(V/Al 및 Ni/Al)를 통하여 원유 오염 의심 정점을 다른 정점과 구분할 수 있었으며 이 비들을 향후 원유 오염 지시자로 활용할 수 있으리라 예상된다.

Keywords

References

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