Through the simulation experiment,the photolysis characteristic of dinotefuran and the factors influencing the photolysis of dinotefuran in water were studied.The results showed that the photodegration rate of dinotefuran decreases with the increased of initial concentration or pH of aqueous solution.The photolysis half-life was of dinotefuran in buffer solution of pH5,pH7,pH8 and pH9was 12.42 h,12.06 h,10.84 hand 8.45 hrespectively.Ferric iron and nitrate ions had photosensitization on dinotefuran.Humic ac...