Journal of the Korean Society of Urban Environment (한국도시환경학회지)

The Korean Society of Urban Environment (한국도시환경학회)
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Evaluation of Toxicity of Heavy Metals and Surfactants Using Vibrio Fischeri and Daphnia Magna

발광박테리아(Vibrio fischeri)와 물벼룩(Daphnia magna)을 이용한 중금속 및 계면활성제의 혼합독성 평가

  • Paik, Dohyeon (Department of BioHealth Sciences, Changwon National University) ;
  • Lee, Narae (Department of BioHealth Sciences, Changwon National University) ;
  • Lee, Sangmin (Department of Environmental Engineering, Kongju National University) ;
  • Hong, Sungchul (Department of Bioenvironmental Energy, Pusan National University)
  • 백도현 (창원대학교 생명보건학부) ;
  • 이나래 (창원대학교 생명보건학부) ;
  • 이상민 (국립공주대학교 환경공학과) ;
  • 홍성철 (부산대학교 바이오환경에너지학과)
  • Received : 2018.12.13
  • Accepted : 2018.12.24
  • Published : 2018.12.31
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Abstract

In this study, the mixed toxicity of heavy metals (Cu, Pb, Hg) and surfactants (SLS, ALS) was evaluated by using Vibrio fischeri and Daphnia magna. The sensitivity of ecotoxicity to heavy metals was sensitive to daphnia but the case of surfactants were more sensitive to Vibrio fischeri. Experimental results of Vibrio fischeri show that the toxicity value P(O) was lower than the predicted value P(E), and the antagonistic effect was observed when the heavy metal and the surfactant were mixed. It seems that SLS and ALS, which are anionic surfactants, have anionic form on the hydrophilic head, so that they have an antagonistic effect that they are bonded with heavy metal ion which is a cation type and the actual toxicity is lowered. In Daphnia magna, the results showed that antagonistic, additive and synergistic effects were in order as concentrations increased. As the concentration increases, Daphnia magna, which is highly sensitive to heavy metals, seems to have a synergistic effect with a rapid increase in mortality.

본 연구에서는 중금속(Cu, Pb, Hg)과 계면활성제(SLS, ALS)의 혼합 독성을 발광박테리아(Vibrio fischeri)와 물벼룩(Daphnia magna)를 이용하여 평가하였다. 중금속에 대한 생태독성 민감도의 경우 물벼룩이 민감하게 반응하였지만 계면활성제의 경우 발광박테리아가 더 민감하게 반응하여 시험생물종 간의 민감도 차이를 확인하였다. 발광박테리아를 이용한 혼합 독성 평가 결과 대부분 실제 실험한 독성 값 P(O)이 예측된 값 P(E)보다 낮게 나타나 중금속과 계면활성제를 혼합 시 길항효과(antagonistic effect)를 보이며, 이는 음이온 계면활성제인 SLS와 ALS가 친수성 머리 부분에 음이온 형태를 띠고 있어 양이온 형태인 중금속 이온과 결합하여 실제 독성이 낮아지는 길항효과가 나타나는 것으로 보인다. 물벼룩을 이용한 혼합 독성 평가 결과 농도가 높아질수록 길항효과(antagonistic effect), 첨가효과(additive effect), 상승효과(synergistic effect)가 순서대로 나타났다. 이는 중금속에 대한 민감도가 높은 물벼룩이 농도가 높아짐에 따라 급격히 치사율이 증가하여 상승효과가 나타난 것으로 보인다.

Keywords

Acknowledgement

Supported by : 부산대학교

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