Toxicity evaluation of 4-Nonylphenol isomers with ecotoxicological bioassay using delayed luminescence in the green alga Pseudokirchneriella subcapitata

抄録

4-nonylphenol isomers (4-NP’s) have the highest toxicity in the NP’s. We evaluated the toxicity of 4-NP’s with algal test using delayed luminescence (DL) to determine toxic influence on algae. The results suggest that the toxicity of linear chain type (4-n-NP) is the highest in 4-NP’s, though the toxicity of branched type of NP’s has been reported to be higher than its linear chain type. It is reported that the toxicity of NP’s differs according to the isomers. In fact, the EC₅₀ of 4-NP’s is unequal (0.4~4.0), suggesting that individual toxic evaluation on NP’s is important.