Toxicity of Nano-ZnO and Nano-TiO2 to M. aeruginosa

Zhe Hua Xue; Yu Lin Tang; Yu Hui Sun

doi:10.4028/www.scientific.net/AMR.1073-1076.278

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 1073-1076Toxicity of Nano-ZnO and Nano-TiO2 to M....

Toxicity of Nano-ZnO and Nano-TiO₂ to M. aeruginosa

Abstract:

Anabaena sp. and M. aeruginosa were used to examine the toxic mechanism of nano-ZnO to them, as well as the toxicity. Typical chlorophyll fluorescence parameters, including effective quantum yield, photosynthetic efficiency and maximum electron transport rate, were measured by a pulse amplitude modulated fluorometer. Results showed that nano-ZnO could inhibit Anabaena sp. and M. aeruginosa growth with the EC₅₀ (concentration for 50% of maximal effect) of 0.74±0.01 and 1.68±0.01 mg/L respectively. The toxicity of nano-ZnO to Anabaena sp. is higher than that to M. aeruginosa, which can be proved by the malondialdehyde content in Anabaena sp. and M. aeruginosa cells.

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Periodical:

Advanced Materials Research (Volumes 1073-1076)

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278-281

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1073-1076.278

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Online since:

December 2014

Authors:

Zhe Hua Xue, Yu Lin Tang*, Yu Hui Sun

Keywords:

M. Aeruginosa, Mechanism, Nano-ZnO, Toxicity

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