纳米金修饰电极检测三聚氰胺条件的优化

陈林林; 吴嘉树; 李伟; 范天娇; 韩可; 辛嘉英

doi:10.13386/j.issn1002-0306.2020.18.035

纳米金修饰电极检测三聚氰胺条件的优化

1. 哈尔滨商业大学, 省高校食品科学与工程重点实验室, 黑龙江哈尔滨 150076;
2. 中国科学院, 兰州化学物理研究所, 羰基合成与选择氧化国家重点实验室, 甘肃兰州 730000

基金项目:

哈尔滨商业大学博士科研启动项目(12DL010)。

哈尔滨市应用技术研究与开发项目(2014RFQXJ115)

哈尔滨商业大学校级科研项目(18XN079)

国家自然科学基金项目(21573055)

详细信息

作者简介:
陈林林(1979-),女,博士,副教授,研究方向:食品科学,E-mail:chenlinl2013@126.com。

中图分类号: TS207.5
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出版历程
- 收稿日期: 2019-11-10
- 网络出版日期: 2020-11-11
- 刊出日期: 2020-09-14

Optimization of Melamine Detection Conditions by Nano-gold Modified Electrode

1. Local Key Laboratory of Food Science and Engineering, Harbin University of Commerce1, Harbin 150076, China;
2. State Key Laboratory of Oxo Synthesis & Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China

摘要

摘要: 为研制一种新型简单低成本的电化学传感方法,用于检测食品中的三聚氰胺。采用混合自组装的方式,将甲烷氧化菌素(Mb)功能化纳米金(AuNPs)组装到修饰电极表面,制备出Mb-AuNPs修饰电极用来检测三聚氰胺。通过电化学循环伏安法研究了三聚氰胺在此修饰电极上的电化学行为。结果表明,优化后的检测条件为:PBS溶液浓度为0.1 mol/L,PBS溶液pH为6.0。在三聚氰胺体系中的检测可知,三聚氰胺浓度与峰电流呈良好的线性关系,相关系数r为0.9909,该方法检出限(LOD)为0.384×10^-8 mol/L。该电极选择性和重现性好,具有实际应用价值。
- 甲烷氧化菌素 /
- 纳米金 /
- 电化学传感器 /
- 三聚氰胺
Abstract: In order to develop a new simple and low-cost electrochemical sensing method for detecting melamine in food. The methanobactin(Mb) functionalized gold(AuNPs) nanoparticles were assembled on the surface of the modified electrode by means of hybrid self-assembly,and the modified electrode of Mb-AuNPs was prepared for the detection of melamine. The results showed that the electrochemical behavior of melamine on this modified electrode was determined by electrochemical cyclic voltammetry. The optimized conditions were as follows:The concentration of PBS solution 0.1 mol/L,and the pH value of PBS solution 6.0. The detection in the melamine system showed that the melamine concentration had a good linear relationship with the peak current. The correlation coefficient was 0.9909. The detection limit(LOD) of the method was 0.384×10^-8 mol/L. The electrode would have good selectivity and reproducibility,and has practical application value.
- methanobactin /
- gold nanoparticles /
- electrode /
- melamine

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