Acute toxicity of fluazinam to aquatic organisms and its bioaccumulation in Brachydanio rerio

Wu, Wenzhu; Kong, Deyang; Zhang, Weidong; Bu, Yuanqing; Li, Juying; Shan, Zhengjun

Acute toxicity of fluazinam to aquatic organisms and its bioaccumulation in Brachydanio rerio

2020

Fluazinam (FZN) is a dinitroaniline fungicide. To evaluate the environmental risk of FZN in aquatic environments and ascertain the potential danger to typical aquatic organisms in China, the acute toxicity of FZN to representative aquatic organisms, including Brachydanio rerio, Chlorella vulgaris Beij., Daphnia magna Straus, and Xenopus laevis, was measured, and its bioaccumulation properties in Brachydanio rerio were further investigated. The results showed that the acute toxicity of FZN to Brachydanio rerio and Xenopus laevis is extremely high, and the bioaccumulation factor BCF₈d of FZN in Brachydanio rerio ranges between 2287 and 3570, implying that it has high bioaccumulation properties. FZN poses a strong environmental risk for aquatic organisms and possesses great bioaccumulation properties, which may cause pollution to aquatic environments.

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