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一种用于痕量检测日落黄的氧化锌纳米花基电化学传感器。

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

作者信息

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

机构信息

Institute for Agricultural Product Quality Safety and Testing Technology, Guangxi Academy of Agricultural Sciences, Nanning 530007, China.

Quality Inspection and Test Center for Sugarcane and Its Product, China Ministry of Agriculture (Nanning), Nanning 530007, China.

出版信息

Sensors (Basel). 2017 Mar 8;17(3):545. doi: 10.3390/s17030545.

DOI:10.3390/s17030545
PMID:28282900
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5375831/
Abstract

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 μg/L and 10-70 μg/L, while the detection limit was 0.10 μg/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.

摘要

通过简单的工艺合成了氧化锌纳米花（ZnONF），并将其用于构建用于检测日落黄（SY）的高灵敏度电化学传感器。由于ZnONF的大表面积和高富集效率，ZnONF修饰的碳糊电极（ZnONF/CPE）对SY的电化学氧化表现出强烈的增强作用。使用基于ZnONF的传感器通过伏安法研究了SY的电化学行为。优化参数包括ZnONF的用量、富集时间和pH值。在最佳条件下，氧化峰电流在0.50 - 10 μg/L和10 - 70 μg/L范围内与SY浓度呈线性比例关系，而检测限为0.10 μg/L（信噪比 = 3）。所提出的方法用于测定软饮料中SY的含量，回收率为97.5% - 103%，结果与高效液相色谱法获得的结果吻合良好。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/6e77d58909a7/sensors-17-00545-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/978a2df6125f/sensors-17-00545-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/325157638fff/sensors-17-00545-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/062d8c4f317a/sensors-17-00545-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/a84efa7a3fc8/sensors-17-00545-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/26adc8c38200/sensors-17-00545-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/8fbacec0bd2d/sensors-17-00545-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/6e77d58909a7/sensors-17-00545-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/978a2df6125f/sensors-17-00545-sch001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/325157638fff/sensors-17-00545-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/062d8c4f317a/sensors-17-00545-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/a84efa7a3fc8/sensors-17-00545-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/26adc8c38200/sensors-17-00545-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/8fbacec0bd2d/sensors-17-00545-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/8017/5375831/6e77d58909a7/sensors-17-00545-g006.jpg

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