A non-enzymatic Electrochemical Sensor Based on rGO-PPy for Rapid and Sensitive Determination of Histamine in Meat
文献类型： 外文期刊
作者： Hu, Bobo 1 ; Zhang, Nana 2 ; Li, Huihui 1 ; Sun, Chong 2 ;
作者机构： 1.Nanjing Normal Univ, Jiangsu Collaborat Innovat Ctr Biomed Funct Mat, Sch Chem & Mat Sci, Jiangsu Key Lab Biomed Mat, Nanjing 210023, Peoples R China
2.Jiangsu Acad Agr Sci, Inst Agr Prod Proc, Nanjing 210014, Peoples R China
3.Minist Sci & Technol, Jiangsu Key Lab Food Qual & Safety, State Key Lab Cultivat Base, Nanjing 210014, Peoples R China
关键词： rGO-PPy; Histamine; Electrochemical sensor; Food safety
期刊名称：INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE （ 影响因子：1.765； 五年影响因子：1.685 ）
ISSN： 1452-3981
年卷期： 2021 年 16 卷 5 期
页码：
收录情况： SCI
摘要： Sensitive and reliable quantification of histamine (His) is essential to ensure food safety. In this study, a sensing material consisting of reduced graphene oxide/polypyrrole (rGO-PPy) composites is successfully prepared by a two-step synthesis method and verified by transmission electron microscopy (TEM), Fourier transform infrared (FTIR) spectroscopy, ultraviolet-visible (UV-vis) spectroscopy, Xray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Based on rGO-PPy, an electrochemical method is established, and the electrochemical behaviours are studied by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV). The experimental parameters, such as the detection method, the concentration and volume of rGO-PPy modified on GCE, and the pH value of the buffer solution, are optimized. Under the optimized conditions, the linear equation of the electrochemical sensor to His is I (mu A) = 0.01047c + 0.1842 (R-2 = 0.9970) with a linear range of 10 similar to 800 mu M, and the detection limit is 3.01 mu M. Practical samples are also detected, which proves that the sensor has great application prospects. Therefore, this idea and method will make an excellent contribution to food safety.
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