利用化学计量学方法解析有机污染物降解的动力学过程

利用因子分析、数值遗传算法等化学计量学方法研究了电催化降解有机污染物的动力学过程。以Ti/SnO2＋Sb2O3催化电极为阳极对偶氮类染料甲基橙进行电催化降解为研究对象，采用紫外－可见光度法为测量手段，通过对降解过程中测得的不同波长、不同降解时间的两维吸光度矩阵进行解析，获得了降解过程中存在的组分数、降解的动力学模型等信息。研究表明，甲基橙在Ti/SnO2＋Sb2O3电极上的氧化降解的动力学过程符合连串反应模型，反应过程中产生了带苯环结构的中间体。

The Application of Chemometrics on the Study of Kinetic Process of Electrocatalytic Degradation of Organic Contamination Substance

Methyl orange, a kind of azo dye stuff, was electric-catalytic degraded with Ti/SnO 2+Sb 2O 3 catalytic electrode as the anode. Two way data matrix, which was consisted of absorbance values at different wavelength and different degradation time measured with UV Vis spectrophotometry, was resolved with chemometrics such as factor analysis and numerical genetic algorithm. The information about the number of components and kinetic model in the degradation process was obtained. The result showed that the degradation reaction of methyl orange on Ti/SnO 2+Sb 2O 3 electrode is coincided with the model of consecutive reaction. The intermediate with benzene ring appeared in the degradation process and its oxidizing decomposing rate on the catalytic-electrode is the determination step on the degradation efficiency of waste water system.