中文摘要：

Fluoroquinolone 抗菌素(FQ ) 经常在水的环境作为新兴的污染物质被检测。在 gatifloxacin 的 photodegradation 上的这研究，动力学，影响因素和机制，代表性的 FQ，被调查。photodegradation 跟随伪 first-order 动力学。有量收益的 Gatifloxacin photodegrades (5.94 摩 ????????????????? 溜？？

英文摘要：

Fluoroquinolone antibiotics （FQs） are frequently detected as emerging pollutants in aqueous environments.In this study,kinetics,influencing factors and mechanisms on the photodegradation of gatifloxacin,a representative FQ,were investigated.The photodegradation follows the pseudo-first-order kinetics.Gatifloxacin photodegrades with a quantum yield of （5.94 ± 0.95） × 10 3 in pure water and undergoes direct photolysis as well as self-sensitized photodegradation.The FQ photodegrades slower in freshwater and seawater than in pure water,which is attributed to the integrative effects of pH and the aqueous dissolved matter （e.g.,humic acids and NO 3-） on the photodegradation.A toxicity test using Vibrio fischeri revealed the formation of hazardous photoproducts.