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Preliminary Study on Seed Germination and Bacterial Bioluminescence for Assessing the Toxicity of Domestic Bentonites

씨앗 발아와 박테리아 발광을 이용한 국내 벤토나이트 독성 평가를 위한 사전 연구결과

  • Kong, In Chul (Department of Environmental Engineerting, Yeungnam University) ;
  • Lee, Mun Hee (Department of Environmental Engineerting, Yeungnam University) ;
  • Jang, Hyun Jin (Department of Environmental Engineerting, Yeungnam University) ;
  • Lee, Eun Jin (Department of Environmental Engineerting, Yeungnam University) ;
  • Ko, Kyung Seok (Korea Institute of Geoscience & Mineral Resources (KIGAM)) ;
  • Kang, Il Mo (Korea Institute of Geoscience & Mineral Resources (KIGAM))
  • Received : 2016.10.04
  • Accepted : 2016.11.01
  • Published : 2016.10.28

Abstract

In this preliminary study, we assessed the toxicity of domestic bentonites using environmental toxicity testings of seed germination and bacterial bioluminescence. In cases of tested bulk bentonite samples, following ranges of toxicity were observed: -3 ~ 95% bioluminescence, 7.1 ~ 92.1% Lactuca germination. Similar results were also observed among tested other seeds, except seed Raphanus. No significant correlations between toxicity and metals contents of bentonite extractants were observed throughout this investigation. Interestingly, distinct different effects were observed according to bentonite colors (blue $67{\pm}8.7%$, pink $27{\pm}10.4%$, brown $58{\pm}14.5%$).

환경독성법 (세균발광, 씨앗발아)을 이용하여 국내 벤토나이트 독성에 관한 기초 연구를 수행하였다. 생물발광과 상추를 이용한 씨앗발아에서의 독성범위는 각 -3 ~ 95%와 7.1 ~ 92.1%로 나타났다. 씨앗발아의 경우 상추 이외에 조사한 알타리무, 아욱의 씨앗 실험에서도 비슷한 결과를 나타내었다. 다양한 약산농도에서 추출한 점토광물이 함유하고 있는 중금속 함량과 독성의 상관관계는 거의 나타나지 않았다($R^2$ < 0.1). 특이한 사항은 점토광물의 색깔별 그룹에 따라 미치는 영향에 차이가 있음을 관찰할 수 있었다(청색 $67{\pm}8.7%$, 분홍 $27{\pm}10.4%$, 갈색 $58{\pm}14.5%$).

Keywords

References

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