A Zinc Oxide Nanoflower-Based Electrochemical Sensor for Trace Detection of Sunset Yellow

文献类型： 外文期刊

第一作者： Jiang, Cuiwen

作者： Jiang, Cuiwen;Li, Tao;Liao, Jie;Fan, Yegeng;Wei, Yuning;Yan, Feiyan;Xie, Liping;Ya, Yu;Jiang, Cuiwen;Li, Tao;Liao, Jie;Fan, Yegeng;Wei, Yuning;Yan, Feiyan;Xie, Liping

作者机构：

关键词： zinc oxide nanoflower;sunset yellow;electrochemical sensor;trace detection

期刊名称：SENSORS （ 影响因子：3.576； 五年影响因子：3.735 ）

ISSN： 1424-8220

年卷期： 2017 年 17 卷 3 期

页码：

收录情况： SCI

摘要： Zinc oxide nanoflower (ZnONF) was synthesized by a simple process and was used to construct a highly sensitive electrochemical sensor for the detection of sunset yellow (SY). Due to the large surface area and high accumulation efficiency of ZnONF, the ZnONF-modified carbon paste electrode (ZnONF/CPE) showed a strong enhancement effect on the electrochemical oxidation of SY. The electrochemical behaviors of SY were investigated using voltammetry with the ZnONF-based sensor. The optimized parameters included the amount of ZnONF, the accumulation time, and the pH value. Under optimal conditions, the oxidation peak current was linearly proportional to SY concentration in the range of 0.50-10 mu g/L and 10-70 mu g/L, while the detection limit was 0.10 mu g/L (signal-to-noise ratio = 3). The proposed method was used to determine the amount of SY in soft drinks with recoveries of 97.5%-103%, and the results were in good agreement with the results obtained by high-performance liquid chromatography.

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