期刊
JOURNAL OF AOAC INTERNATIONAL
卷 99, 期 5, 页码 1287-1294出版社
AOAC INT
DOI: 10.5740/jaoacint.16-0138
关键词
-
资金
- National Natural Science Foundation of China [21575130, 21275132]
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.
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