模拟太阳光作用下间甲酚的水相和冰相光转化研究  

INVESTIGATION ON THE PHOTOCONVERSION OF M-CRESOL IN AQUEOUS SOLUTION AND IN ICE UNDER SIMULATED SUNLIGHT

作　　者：薛洪海[1] 李林璘[1] 康春莉[1] 李哲[1] 郭晓静[1] 

机构地区：[1]吉林大学环境与资源学院,长春130012

出　　处：《环境化学》2011年第8期1505-1508,共4页Environmental Chemistry

基　　金：国家自然科学基金项目(20577014和41073063)

摘　　要：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.

关 键 词：间甲酚 光转化 冰相 水相 

分 类 号：X13[环境科学与工程—环境科学]