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当前位置: 首页 > 文章 > 石墨烯复合材料在电化学检测食品中亚硝酸盐的研究进展 食品科学 2018 (23) 337-345
Position: Home > Articles > Recent Progress in Electrochemical Detection of Nitrite in Foodstuffs Using Graphene-Based Composite Materials FOOD SCIENCE 2018 (23) 337-345

石墨烯复合材料在电化学检测食品中亚硝酸盐的研究进展

作  者：
刘晓鹏;贺全国;刘军;李广利;梁静;邓培红
单  位：
湖南工业大学生命科学与化学学院;衡阳师范学院化学与材料科学学院
关键词：
亚硝酸盐;电化学检测;石墨烯;复合材料;食品检测;电化学传感器
摘  要：
亚硝酸盐是一种常见的食品添加剂,过量的亚硝酸盐可与人体内的氨基化合物反应形成强致癌物亚硝胺化合物,因此对亚硝酸盐的检测极其必要。与其他传统检测方法相比,电化学法具有仪器简单、操作方便、分析快速和灵敏度高等优点。石墨烯具有电化学窗口宽、电化学稳定性好、电催化活性高和电子转移速率快等电化学特性,故石墨烯及其复合材料是用于检测亚硝酸盐电化学传感器的理想电极修饰材料。石墨烯与其他功能材料复合能进一步改善其可分散与可加工性能,提高修饰电极的电催化活性和检测选择性。本文综述了纳米金属粒子/石墨烯、金属复合物/石墨烯、纳米金属氧化物粒子/石墨烯、高分子纳米材料/石墨烯、非金属纳米材料/石墨烯等复合石墨烯材料修饰电极在电化学法检测亚硝酸盐方面的研究进展,并重点阐述了相关设计思路与电极反应机理,深入分析比较了不同复合材料修饰电化学传感器的检测效果,从而说明采用基于石墨烯复合材料修饰电极电化学检测亚硝酸盐更具优势。最后讨论了石墨烯复合材料修饰电极的不足,展望了其在食品中亚硝酸盐检测的应用前景和未来发展方向。
译  名：
Recent Progress in Electrochemical Detection of Nitrite in Foodstuffs Using Graphene-Based Composite Materials
作  者：
LIU Xiaopeng;HE Quanguo;LIU Jun;LI Guangli;LIANG Jing;DENG Peihong;College of Life Sciences and Chemistry, Hunan University of Technology;Department of Chemistry and Material Science, Hengyang Normal University;
单  位：
LIU Xiaopeng%HE Quanguo%LIU Jun%LI Guangli%LIANG Jing%DENG Peihong%College of Life Sciences and Chemistry, Hunan University of Technology%Department of Chemistry and Material Science, Hengyang Normal University
关键词：
nitrite;;electrochemical determination;;graphene;;composite materials;;food detection;;electrochemical sensor
摘  要：
Nitrite is a common food additive. However, excessive nitrite can react with amides in the human body to form carcinogenic nitrosamine compounds. Therefore, it is necessary to detect nitrites for food safety and human health. Compared with traditional detection methods, the electrochemical method has many advantages including easy and convenient operation with simple instruments, rapid detection, and high sensitivity. Since graphene possesses many attractive electrochemical properties(i.e. a wide electrochemical window, high electrocatalytic activity and fast electron transfer rate), graphene and its composites have become ideal electrode modifying materials for electrochemical sensors for the detection of nitrite. The dispersibility and processing suitability of graphene can be improved by modifying electrochemical sensors with graphene-based composites, thereby enhancing the electrocatalytic activity and detection selectivity. In this article, we review recent progress in the application of nano-metal particle/graphene, metal complex/graphene, metal oxide nanoparticles/graphene, polymer nanosmaterial/graphene and non-metallic nanoparticle/graphene composites for the determination of nitrite in foodstuffs, with focus on the design principles and the electrode reaction mechanism. Moreover, the detection performances of electrochemical sensors modified with various graphene-based composites are compared. This review demonstrates that the graphene-based composites are advantageous over traditional methods. Finally, the shortcomings of graphene-based composite modified electrodes are discussed, and future prospects and directions for their application in nitrite detection in foodstuffs are presented.

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