A Simple and Sensitive Voltammetric Method for the Determination of Orange II Based on a Functionalized Graphene-Modified Electrode

作者：Gao, Yudong; Xie, Zhengkun; Zhang, Yulong; Zou, Lina; Ye, Baoxian^*

来源：Journal of AOAC International, 2016, 99(5): 1287-1294.

DOI：10.5740/jaoacint.16-0138

• PERFORMANCE LIQUID-CHROMATOGRAPHY
• COMPOSITE FILM
• ACID ORANGE
• POLY(SODIUM 4-STYRENE-SULFONATE)
• MASS-SPECTROMETRY
• SUNSET YELLOW
• OXIDE
• DYES
• TARTRAZINE
• PLATFORM

A simple and sensitive voltammetric sensor for Orange II was developed, based on a poly(sodium p-styrenesulfonate)-functionalized graphene-modified glassy carbon electrode. This voltammetric sensor showed strong accumulation ability and an excellent voltammetric response for Orange II. The electrochemical behavior of Orange II was systematically investigated in a pH 7.0 phosphate buffer solution. By linear sweep voltammetry, under optimum conditions, a good linear relationship was obtained between peak currents and Orange II concentrations in the wider range of 3x10(-8) to 5x10(-8) mol/L, with an LOD of 1 x 10(-8) mol/L. In addition, the proposed Orange II sensor was successfully applied to real food samples with satisfactory recovery.

• 出版日期2016-10
• 单位郑州大学