• 文献标题:   A Simple and Sensitive Voltammetric Method for the Determination of Orange II Based on a Functionalized Graphene-Modified Electrode
  • 文献类型:   Article
  • 作  者:   GAO YD, XIE ZK, ZHANG YL, ZOU LN, YE BX
  • 作者关键词:  
  • 出版物名称:   JOURNAL OF AOAC INTERNATIONAL
  • ISSN:   1060-3271 EI 1944-7922
  • 通讯作者地址:   Zhengzhou Univ
  • 被引频次:   2
  • DOI:   10.5740/jaoacint.16-0138
  • 出版年:   2016

▎ 摘  要

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.