2018 Volume 60 Issue 4 Pages 435-459
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.
