Environmental Analysis Health and Toxicology

The Korean Society of Environmental Health and Toxicology (환경독성보건학회)
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Delayed Mortality of Benthic Amphipods Monocorophium acherusicum Exposed to Various Pollutants in Seawater(Cd, Cu, Hg, TBT, Ammonia and Phenanthrene)

유해오염물질에 급성 노출된 단각류 Monocorophium acherusicum의 지연 사망률에 관한 연구

  • Lee Jung-Suk (Institute of Environmental Protection and Safety, NeoEnBiz Co.,) ;
  • Lee Kyu-Tae (Institute of Environmental Protection and Safety, NeoEnBiz Co.,)
  • 이정석 (㈜네오엔비즈 환경안전연구소) ;
  • 이규태 (㈜네오엔비즈 환경안전연구소)
  • Published : 2005.06.01
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Abstract

다양한 유해오염물질에 급성 노출된 단각류 Monocorphium acherusicum의 노출 기간 이후에 발생하는 지연 사망(latent mortality)이 반수치사농도(LC5O)산출에 어떤 영향을 미치는 지를 규명하기 위한 일련의 실험이 수행되었다. 본 연구에서는 실험생물을 카드뮴, 구리, 수은과 같은 중금속, tributyltin(TBT), 암모니아 그리고 방향성탄화수소인 phenanthrene에 각각 96시간 동안 노출시킨 후 깨끗한 해수에 옮겨 다시 6일 동안 배양하면서 사망률을 조사하였다. 실험결과 구리, TBT, 암모니아, phenanthrene과 같은 물질에 노출된 M. acherusicum의 사망률은 노출이 끝난 이후에도 계속적으로 증가하는 지연 사망이 관찰되었으며, 이에 따라 기존의 방법_으로 산출된 96-h LC50보다 지연 사망을 고려한 새로운 LC50이 크게 낮아지는 경향이 관찰되었다. 지연사망률을 고려하지 않은 기존의 독성시험 결과는 지연 사망의 영향을 반영하지 못하므로 실제 현장에서 발생할 수 있는 오염물질의 영향을 과소평가 할 가능성이 있다. 따라서 지연 사망률에 대한 고려는 실제 현장 개체군에 대한 유해오염물질의 영향을 보다 정화하게 예측하는 데에 활용될 수 있을 것이다.

Keywords

References

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