隐性孔雀石绿在有机溶剂中的光化学降解过程  

Mechanism Studies on the Photochemical Degradation of Leucomalachite Green in Organic Solvent Media

作　　者：张俊艳[1] 温裕云[1] 刘珺[1] 金贵娥[1] 弓振斌[1] 

机构地区：[1]厦门大学海洋与环境学院近海海洋环境科学国家重点实验室,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2011年第B09期32-37,共6页Journal of Xiamen University：Natural Science

基　　金：福建省食品药品监督管理局委托项目

摘　　要：使用实验室自制高效光降解反应器研究了隐性孔雀石绿(LMG)在有机相中的光化学降解过程,探讨了反应介质、盐度对LMG光化学降解反应动力学的影响.实验结果表明,LMG在有机相中的光化学降解反应为近似一级反应;反应介质的极性对LMG光化学降解反应影响显著,介质极性越大,反应速率越小;盐度对LMG光化学降解反应无明显影响.LMG在光照条件下生成孔雀石绿(MG),随后失去一个或多个亚甲基,生成一系列去甲基化衍生物.The mechanism of photochemical degradation of leucomalachite green （LMG） in solvent media has been investigated with a laboratory-built photochemical degradation （PCD） device. Spectrometric characteristics of LMG and it main degradation products suggested that LMG had deassociated under UV irradiation. The kinetics of the photochemical reaction demonstrated that laboratory- built PCD was of high efficiency for off-line degradation of interested organic compound. The photo-degradation reaction of LMG in organic solvent media was approximately pseudo-first-order reaction. Mass spectrometric results showed that LMG was oxidized and converted into Malachite green （MG） when irradiated with UV lamp. A series of demethyl derivatives were also found as the MG was further shined with UV lamp.

关 键 词：隐性孔雀石绿 光化学降解过程 光降解机理 有机溶剂 

分 类 号：Q356.1[生物学—遗传学]