Electropolymerized melamine for simultaneous determination of nitrite and tartrazine

被引：41

作者：

Wu, Shanshan ^{[1
]}

Yin, Zheng-Zhi ^{[2
]}

Chen, Xiaohui ^{[3
]}

Wang, Xueqing ^{[1
]}

Wu, Datong ^{[1
]}

Kong, Yong ^{[1
]}

机构：

[1] Changzhou Univ, Jiangsu Key Lab Adv Catalyt Mat & Technol, Sch Petrochem Engn, Changzhou 213164, Jiangsu, Peoples R China

[2] Jiaxing Univ, Coll Biol Chem Sci & Engn, Jiaxing 314001, Peoples R China

[3] Changzhou Inst Technol, Res Ctr Resources & Environm, Sch Chem Engn & Mat, Changzhou 213032, Jiangsu, Peoples R China

来源：

FOOD CHEMISTRY | 2020年 / 333卷

关键词：

Poly(melamine); Dual functional sensor; Simultaneous determination; Nitrite; Tartrazine; REDUCED GRAPHENE OXIDE; IONIC LIQUID; SUNSET YELLOW; SELECTIVE DETERMINATION; ELECTROCHEMICAL SENSOR; MODIFIED ELECTRODE; GALLIC ACID; FOOD; COLORANTS; COMPOSITE;

D O I：

10.1016/j.foodchem.2020.127532

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Poly(melamine) (PMel) was synthesized via the electropolymerization of melamine monomer, which was then characterized by field-emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS). The possible polymerization mechanisms of melamine were also revealed by FT-IR spectroscopy and UV-Vis spectroscopy. Next, the PMel modified GCE (PMel/GCE) was used for the simultaneous determination of nitrite (NO2-) and tartrazine, and the parameters were optimized. The kinetic study showed that the electrochemical oxidation of nitrite and tartrazine at the surface of PMel/GCE is a typical surface-controlled electrode process. Under the optimun conditions, the developed sensor outperformed those previously reported, and it also exhibited high selectivity and reproducibility. Finally, the PMel/GCE was used for the simultaneous determination of nitrite and tartrazine in foodstuffs, and the results indicated that the proposed sensor could be a promising candidate for accurate determination of nitrite and tartrazine in real food samples.

引用

页数：7

共 47 条

[1] Construction of a chemically modified electrode for the selective determination of nitrite and nitrate ions based on a new nanocomposite [J].