金电极上苯二酚异构体的电化学性质及同时测定  

Electrochemical Properties and Simultaneous Determination of Catechol,Resorcinol and Hydroquinone on Gold Electrode

作　　者：许光日[1] 范世鸽[2] 陈昌国[2] 

机构地区：[1]河南科技学院化学化工学院,新乡453003 [2]重庆大学化学化工学院,重庆400044

出　　处：《应用化学》2013年第5期573-577,共5页Chinese Journal of Applied Chemistry

基　　金：长白山生物资源与功能分子教育部重点实验室开放课题基金资助项目(长生实合字(2010)第01号)

摘　　要：采用循环伏安法研究了邻苯二酚(CAT)、间苯二酚(RE)和对苯二酚(HQ)在0.5 mol/L硫酸水溶液中的电化学行为,循环伏安法和差分脉冲伏安法研究了CAT、RE和HQ共存体系的伏安行为。实验结果表明,在pH=0的硫酸水溶液中,扫描速率为10 mV/s,循环伏安法扫描电位在0～1.2 V(vs.Ag/Cl)时,分离效果明显。本文采用差分脉冲伏安法,测定了CAT、RE和HQ的混合物,检出限依次为3.9×10-6、3.9×10-6和7.8×10-6mol/L。将该方法用于合成样品测定,其精密度和准确度均满足分析要求。Electrochemical behaviors of catechol （ CAT ）, resorcinol （ RE ） and hydroquinone （ HQ ） in 0. 5 mol/L sulfuric acid aqueous solution were studied using cyclic vohammetry. Vohammetric behaviors of CAT, Re and HQ in the coexisting system were studied using cyclic vohammetry and differential pulse voltammetry method. The results show that obvious separation effect is achieved under conditions of pH = 0 （ sulfuric acid ） , scan rate of 10 mV/s, and scan potential of 0 - 1.2 V （ vs. Ag/Cl ）. Under optimal conditions, the detection limit was 3.9 × 10^-6, 3.9 × 10^-6 and 7.8 × 10^-6 mol/L for CAT, RE, and HQ, respectively, in mixture of three substances using differential pulse vohammetry. The method is applied in the analysis of synthesized samples, and the accuracy and precision well satisfy the requirements of the analysis.

关 键 词：金电极 邻苯二酚 间苯二酚 对苯二酚 差分脉冲法 同时测定 

分 类 号：O657.1[理学—分析化学]