胶束电动毛细管色谱对水中邻苯二甲酸二甲酯降解历程的研究  

Studies on Degradation of Dimethyl Phthalate Using Micellar Electrokinetic Capillary Chromatography

作　　者：李海燕[1] 施银桃[1] 曾庆福[1] 

机构地区：[1]武汉科技学院环境科学研究所,武汉430073

出　　处：《环境科学与技术》2002年第2期10-11,42,共3页Environmental Science & Technology

基　　金：湖北省重点科技攻关项目资助 (2 0 0 0 1P1 80 4 )

摘　　要：研究了邻苯二甲酸二甲酯在臭氧氧化和二氧化钛光催化氧化两种条件下的氧化降解历程。采用胶束电动毛细管色谱技术对邻苯二甲酸二甲酯降解反应的中间产物和终产物进行跟踪分析。初步认为 ,臭氧氧化邻苯二甲酸二甲酯时 ,首先是侧链反应 ,生成邻苯二甲酸 ,然后再进一步氧化降解。而TiO2 光催化氧化时 ,则为自由基直接攻击苯环 ,开环生成链状化合物 ,最终降解为CO2 和H2 O。Processes of dimethyl phthalate degradation in aqueous solution by ozonation and TiO\-\{2 \} photo catalytic oxidation respectively were investigated. Characterization of the intermediates and the end products were determined by means of micellar electrokinatic capilliary chromatography. The preliminary results showed main intermediate product by ozonation was phthalate acid that went through oxidation further. However, TiO\-\{2 \} photo catalytic oxidation of dimethyl phthalate follows a free radical free mechanism, directly breaking benzene rings with the end products: CO\-2 and H\-2O.

关 键 词：邻苯二甲酸二甲酯 氧化降解 胶囊电动毛细管色谱 

分 类 号：X830.2[环境科学与工程—环境工程]