抄録
Growth inhibition test using Chlamydomonas reinhardtii were performed to estimate a toxicity to alkylphenols under short-term cultural length. C1-10-Alkylphenols, 4-Butoxyphenol(ButoP), Bis-phenol-A(BPA), Di-2-ethylhexyl phthalate (DEHP) and 17β-Estradiol as a chemical substances were added and tested to determine ErC50 for growth inhibition of Chlamydomonas reinhardtii in this study.
Through the result of growth inhibition test of Chlamydomonas reinhardtii, the difference between 0-24h ErC50 and 0-72h ErC50 were found in dose of 4-t-Octylphenol and 4-Nonylphenol, and sensitivity of short term test for 24 hours was rather higher than that of conventional 0-72h algal inhibition test. In addition, high negative correlationship between log 24h-ErC50 of alkylphenols BPA to Chlamydomonas reinhardtii and their log Pow was recognized in short-term growth inhibition test under the various combination of eleven alkylphenols except for ButoP and DEHP.
It is indicated that toxicity of alkylphenols to growth of Chlamydomonas reinhardtii is sensitively estimated in short-term test within 24 hours.
