紫外-可见分光光度法测定H_(2)O_(2)氧化邻苯醌发色基团的实验研究  

Chromogenic group of o-benzoquinone oxidized by H_(2)O_(2) by UV Vis spectrophotometry

作　　者：郗伟[1] 李斌[1] XI Wei;LI Bin(College of Chemical Engineering Department,Shaanxi Institute of Technology,Xi′an 710302,China)

机构地区：[1]陕西国防工业职业技术学院化学工程学院,陕西西安710302

出　　处：《化学工程师》2021年第8期22-25,共4页Chemical Engineer

基　　金：陕西省自然科学基础研究计划项目(2019JM-389);陕西国防工业职业技术学院2019年科研计划项目(No.Gfy19-30)。

摘　　要：3,5-二叔丁基邻苯醌模型物与H_(2)O_(2)反应,先采用GC-MS进行定性分析,然后用紫外-可见分光光度法来定量分析氧化降解过程中邻苯醌浓度的变化规律,在最大吸收波长处测量一定浓度样品溶液的吸光度,并与一定浓度的对照溶液的吸光度进行比较,采用吸收系数法求出样品溶液的浓度;直观的表征邻苯醌发色基团与H2O2反应时的变化特性,为进一步动力学研究提供了一种方法路径。The 3,5-di-tert-butyl-o-benzoquinone model compound reacted with hydrogen peroxide.Qualitative analysis was carried out by GC-MS,and then the variation of o-benzoquinone concentration in the process of oxidative degradation was quantitatively analyzed by UV Vis spectrophotometry.The absorbance of a certain concentration of sample solution was measured at the maximum absorption wavelength,and compared with that of a certain concentration of control solution The concentration of the sample solution can be calculated,and the change characteristics of o-benzoquinone chromophore group with hydrogen peroxide can be directly characterized,which provides a method for further kinetic study.

关 键 词：分光光度法 邻苯醌 发色基团 实验研究 

分 类 号：TQ244.6[化学工程—有机化工]