Acute toxicity of 353-nonylphenol and its metabolites for zebrafish embryos.

Background, Aim And Scope: Nonylphenol (NP) can be detected in the aquatic environment all over the world. It is applied as a technical mixture of isomers of which 353-NP is the most relevant both in terms of abundance (about 20% of total mass) and endocrine potential. 353-NP is metabolised in sewage sludge.