聚茜素红-还原态氧化石墨烯修饰玻碳电极测定苯二酚  

Determination of Benzenediol by Reduced Graphene Oxide-Polyalizarin Red S Modified Glass Carbon Electrode

作　　者：朱超云[1] 宋伟[1] 许红林[2] 姚琪[1] 

机构地区：[1]南京化工职业技术学院应用化学系,南京市葛关路625号210048 [2]中国石化扬子石油化工有限公司安全环境健康部环境保护监测站,南京市新华路725号210048

出　　处：《光谱实验室》2012年第5期3189-3192,共4页Chinese Journal of Spectroscopy Laboratory

基　　金：南京化工职业技术学院科研项目(NHKY-2010-05);2011年江苏省大学生实践创新训练计划

摘　　要：将还原态氧化石墨烯分散在茜素红水溶液中。通过电化学聚合制备了聚茜素红-还原态氧化石墨烯修饰玻碳电极,用于水中苯二酚含量的测定。电极对于对苯二酚和邻苯二酚的氧化还原反应具有明显的电催化作用。利用示差脉冲伏安法测定了对苯二酚和邻苯二酚的含量,氧化峰电流在7.00×10-6—4.00×10-4mol/L浓度范围内呈良好的线性关系,检出限分别为4.34×10-6、3.42×10-6mol/L。结果表明所制备的修饰电极可应用于水中苯二酚的测定。Reduced graphene oxide（RGO） was dispersed in water with alizarin red S（ARS）.ARS-RGO modified glass carbon electrode（GCE） was prepared by electrochemistry.The GCE was applied to determining benzenediol in water.The GCE had obvious electro-catalytic effect on the redox reactions of hydroquinone and catechol.The contents of hydroquinone and catechol can be sensitively determined by differential pulse voltammetry.There were good linear relationships for concentrations of hydroquinone and catechol in the range of 7.00×10^-6—4.00×10^-4mol/L with the detection limits of 4.34×10^-6mol/L and 3.42×10^-6mol/L,respectively.The results showed that the prepared GCE can be used for the determination of benzenediol in water.

关 键 词：还原态氧化石墨烯 茜素红 玻碳电极 苯二酚 

分 类 号：O657.14[理学—分析化学]