本文研究了在模拟太阳光作用下间甲酚的水相和冰相光转化规律.考察了不同浓度的H2O2、NO-2和NO3^-对间甲酚光转化的影响,建立了不同条件下间甲酚光转化的动力学方程.结果表明,在模拟太阳光作用下间甲酚在水相和冰相中均可以发生光转化,间甲酚的冰相光转化速率小于水相.在本实验条件下,H2O2和NO2^-促进了间甲酚在水相和冰相中的光转化,NO3^-对间甲酚水相光转化的影响不明显,但抑制了间甲酚的冰相光转化.间甲酚的光转化过程均符合一级反应动力学方程.
This work investigated the photoconversion of m-cresol in aqueous solution and in ice under simulated sunlight irradiation,studied the influence of H2O2,NO-2 and NO-3 on the photoconversion of m-cresol,and established the kinetics equations of m-cresol photoconversion under different conditions.The results showed that m-cresol underwent photoconversion under simulated sunlight irradiation both in aqueous solution and in ice,and the photoconversion rate of m-cresol in ice was lower than that in aqueous solution.H2O2 and NO-2 accelerated the photoconversion of m-cresol in aqueous solution and in ice,while NO-3 had little effect on the photoconversion in aqueous solution,but prohibited the photoconversion in ice.The photoconversion of m-cresol all obeyed the first order kinetics equation.