›› 2018, Vol. 30 ›› Issue (3): 437-444.DOI: 10.3969/j.issn.1004-1524.2018.03.13

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Acute toxicity and safety assessment of nano-TiO2 to aquatic organisms

LYU Lu, AN Xuehua,CHEN Liping, LIU Xinju, GUAN Wenbi, WU Shenggan, ZHAO Xueping*   

  1. State Key Laboratory Breeding Base for Zhejiang Sustainable and Disease Control,Institute of Quality and Standard for Agro-Products,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,China
  • Received:2017-05-15 Online:2018-03-20 Published:2018-03-21

Abstract: In order to assess the safety of nano-TiO2 (nTiO2) to aquatic organisms systematically, its acute toxicity to Scenedesmus obliquus, Daphnia magna Straus, Brachydanio rerio and Xenopus laevis tadpoles was studied, and its safety was evaluated. The results showed that the acute toxicities of nTiO2 to Scenedesmus obliquus, Daphnia magna Straus, Brachydanio rerio and Xenopus laevis tadpoles were 0.140 mg·L-1 (72 h-EC50)、1.26 mg·L-1 (48 h-EC50)、22.0 mg·L-1 (96 h-LC50) and 5.02 mg·L-1 (96 h-LC50), respectively, and their toxictiy levels were high toxicity, moderate toxicity, low toxicity and moderate toxicity, respectively.

Key words: nano-TiO2, aquatic organisms, acute toxicity, safety evaluation

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