石墨烯修饰电极上油橄榄酒中羟基酪醇类多酚检测研究  

Hydroxytyrosol Polyphenol Detection in Olive Wine Based on Graphene Modified Electrode

作　　者：李惠茗[1] 郭兆元[1] 叶科[1] 李超[1] 张惠怡[1] 刘坤平[1,2] 苟小军[2] 

机构地区：[1]成都大学生物工程学院,四川成都610106 [2]成都大学药食同源植物资源开发四川省高校重点实验室,四川成都610106

出　　处：《成都大学学报（自然科学版）》2015年第1期5-7,19,共4页Journal of Chengdu University（Natural Science Edition）

基　　金：四川省中医药管理局中医药科学技术研究专项(2014F002);四川省教育厅自然科学基金(13ZB0344)资助项目

摘　　要：采用化学还原法,制备了功能化的石墨烯及纯石墨烯,构建了双层石墨烯修饰电极用于橄榄酒中羟基酪醇类双酚物质的灵敏检测,修饰电极对羟基酪醇类双酚物质的吸附及石墨烯的高导电性使其表现出良好的电化学活性.电极反应动力学研究表明,羟基酪醇类双酚物质在该修饰电极表面经历了一个受扩散控制的准可逆过程.实验结果表明,在最优试验条件下,邻苯二酚的还原峰电流与其浓度在1×10-7~5×10-5mol/L范围内呈良好的线性关系,可实现实际样品橄榄酒中羟基酪醇的灵敏快速检测.This paper uses the chemical reduction method to prepare the functionalized graphene and pure graphene. The bi-layer graphene modified electrode is constructed for sensitivie detection of hydroxytyrosol polyphenol in olive wine. Due to the adsorption of hydroxytyrosol polyphenol on the modified electrode surface and high electric conductivity of the graphene,the hydroxytyrosol polyphenol exhibits good electrochemical activity. The study of the electrode reaction kinetics indicates that the hydroxytyrosol polyphenol has undergone a diffusion-controlled quasi-reversible process on the modified electrode surface. Under the optimized experimental condition,the reduction peak current of catechol shows a good linear relationship with its concentration from 1 × 10- 7to 5 × 10- 5mol / L,which can be used for rapid detection of hydroxytyrosol polyphenol in real olive wine sample.

关 键 词：石墨烯 羟基酪醇 橄榄酒 电化学 

分 类 号：O657.1[理学—分析化学] TS262.7[理学—化学]