【摘要】 以太阳光和高压汞灯为光源,研究了水溶液中三唑酮光化学降解的影响因子。结果表明:在不同光源和透光介质下,三唑酮的降解能力从大到小依次为:石英试管+高压汞灯、玻璃试管+高压汞灯、石英试管+太阳光、玻璃试管+太阳光、暗室;水溶液中三唑酮初始浓度越高,其光降解率越低,呈负相关关系;丙酮对三唑酮在水中的光解有极显著的光敏作用,光敏效率与丙酮添加量有显著相关性;三唑酮的光解实质为光氧化作用,溶解氧含量对三唑酮光解有重大影响。更多还原

【Abstract】 Sunlight and high pressure mercury lamp(HPML)were used as light sources to study photolysis of triadimefon in aquatic solution and explore affecting factors.The results show that under different lamp-houses and in different translucid media the photolytic rate of triadimefon followed such a sequence as quartz cuvette+HPML>glass cuvette+HPML>quartz cuvette+sunlight>glass cuvette+sunlight>darkroom,and that the higher the initial concentration of triadimefon in the aquatic solution,the lower the photolytic rate.It was also found that acetone was an effective aid to improve photosensitivity of triadimefon to photolysis and its photosensitization rate was found distinctly related to its concentration.Moreover,the photolysis of triadimefon is photo-oxidation in nature,so dissolved oxygen in aquatic solution has an important effect on photolysis of triadimefon.更多还原