17β-雌二醇水溶液紫外光降解的研究

Study on UV-light induced photodegradation of 17β-ethynylestradiol in aqueous solutions

利用紫外杀菌灯(λ=254nm)作为光源,研究了水溶液中17β-雌二醇(E2)光降解反应中影响降解速率的相关因素.实验结果表明:在E2浓度为3.0～20mg/L范围内,初始浓度越小,降解速率越快;降解反应是准一级反应;pH值和Fe3+对降解存在明显的影响.对其降解产物IR分析表明,E2分子结构中的苯环被破坏,其机理有待进一步探讨.

The photodegradation of 17βethynylestradiol (E2) in UV disinfection lamp irradiating were investigated. The results showed, over the range of 3.0~20 mg/L, the smaller initial concentration of E2, the faster of the speed of the photodegradation, the degradation of E2 in aqueous solution were pseudofirst order reaction. The pH values and ferric ions had apparent influences on the process. To analyze the infrared spectra of the photodegradated product induced that benzene ring of molecule structure was broken, the mechanism in ditial need to be carried out.