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当前位置: 首页 > 文章 > 聚嘧啶/石墨烯复合材料修饰电极同时测定日落黄和酒石黄 食品科学 2017,38 (10) 284-290
Position: Home > Articles > Polypyrimidine/Graphene Composite Film Modified Electrode for the Simultaneous Detection of Sunset Yelow and Tartrazine FOOD SCIENCE 2017,38 (10) 284-290

聚嘧啶/石墨烯复合材料修饰电极同时测定日落黄和酒石黄

作  者：
付菊;谭小红;郑寅;王艳;宋新建
单  位：
湖北民族学院化学与环境工程学院;湖北民族学院生物资源保护与利用湖北省重点实验室
关键词：
石墨烯;4-氨基-2-巯基嘧啶;日落黄;酒石黄;电化学传感器
摘  要：
采用液相剥离法制备石墨烯纳米片悬浮液,将其直接滴涂于玻碳电极表面,制备石墨烯修饰电极,再采用电沉积法制得聚嘧啶/石墨烯复合膜修饰电极。采用扫描电子显微镜对该修饰电极的表面形貌进行表征;采用循环伏安法和方波伏安法探究日落黄和酒石黄在该修饰电极上的电化学行为。结果表明,该复合膜修饰电极对两种合成色素均表现出良好的电催化性能。在优化实验条件下,日落黄和酒石黄同时被检测,线性检测范围分别为0.002~2?mol/L和0.003~6?mol/L,检测限分别为0.5 nmol/L和0.9 nmol/L。该方法可用于食品中日落黄和酒石黄的同时测定。
译  名：
Polypyrimidine/Graphene Composite Film Modified Electrode for the Simultaneous Detection of Sunset Yelow and Tartrazine
作  者：
FU Ju;TAN Xiaohong;ZHENG Yin;WANG Yan;SONG Xinjian;Key Laboratory of Biological Resources Protection and Utilization of Hubei Province,Hubei University for Nationalities;School of Chemistry and Environmental Engineering,Hubei University for Nationalities;
关键词：
graphene;;4-amino-2-mercaptopyrimidine;;sunset yellow;;tartrazine;;electrochemical sensor
摘  要：
Graphene nanosheets(GNs), which were prepared by liquid-phase exfoliation method, were directly casted onto the surface of a glassy carbon electrode to obtain a graphene-modified electrode(GN/GCE). Then, the polypyrimidine/graphene composite film modified electrode(p AMP/GN/GCE) was fabricated by electrodeposition method. The surface morphology of the modified electrode was characterized by scanning electron microscope. Electrochemcial behaviors of sunset yellow(SY) and tartrazine(TT) on p AMP/GN/GCE were investigated with cyclic voltammetry(CV) and square wave voltammetry(SWV). The experimental results showed that the as-prepared electrode exhibited remarkable catalytic ability for both SY and TT. Under the optimized experimental conditions, the linear ranges for detecting SY and TT were 0.002–2 mmol/L and 0.003–6 mmol/L, respectively. The limits of detection(LODs) were as low as 0.5 and 0.9 nmol/L(R_(SN) = 3), respectively. This developed method can be used for the simultaneous determination of SY and TT in food samples.

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