Radiolysis of selected antibiotics and their toxic effects on various aquatic organisms

摘要

This study was conducted to investigate the decomposition of three y-irradiated antibiotics(e.g.,tetracycline,sulfamethazine,and lincomycin)and to compare the toxic effects on Daphnia magna.Vibrio fischeri,and Pseudokirchneriella subcapitata.The median cell growth inhibition concentrations(IC_(50))of tetracycline,lincomycin,and sulfamethazine for P.subcapitata dramatically increased(e.g.,toxicity decreased)after radiolysis.The results demonstrated that y-radiation treatment was efficient to decompose antibiotics and thereby their toxicity on P.subcaptitata remarkably decreased due to reduced parent compounds.