Acute toxicity effects of nanoparticles on luminous bacteria in liquid

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  • SUGITA Hajime
    Institute for Geo-Resources and Environment, Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology
  • KOMAI Takeshi
    Graduate School of Environmental Studies, Tohoku University

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Other Title
  • 発光バクテリアに及ぼす液中ナノ粒子の急性毒性影響について
  • 発光バクテリアに及ぼす液中ナノ粒子の急性毒性影響について : ナノ粒子分散液を用いた急性毒性評価試験による検討
  • ハッコウ バクテリア ニ オヨボス エキ チュウ ナノ リュウシ ノ キュウセイ ドクセイ エイキョウ ニ ツイテ : ナノ リュウシ ブンサンエキ オ モチイタ キュウセイ ドクセイ ヒョウカ シケン ニ ヨル ケントウ
  • －ナノ粒子分散液を用いた急性毒性評価試験による検討－
  • －Examination with acute toxicity evaluation tests using nanoparticle dispersion solutions－

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<p>In contamination evaluation methods using luminous bacteria against groundwater or soil contamination by heavy metals, there is a possibility of being influenced by the heavy metal nanoparticles. Conversely, the acute toxicity evaluation methods using luminous bacteria may be available for toxicity evaluation of the nanoparticles. In this study, effects of nanoparticles on luminous bacteria (Vibrio fischeri) were investigated using commercially available dispersions of carbon nanotubes (CNT), Ag nanoparticles and several types of metal oxide nanoparticles. In the results, CNT and SiO2 nanoparticles were verified to have no acutely toxic effects on the luminous bacteria. The acute toxic effects of Ag nanoparticles could not be evaluated because the influence of dispersant could not be removed. On the other hand, Al2O3, TiO2, ZnO, CuO nanoparticles were found to have the acute toxic effects.</p>

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