Amperometric ascorbic acid sensor based on doped ferrites nanoparticles modified glassy carbon paste electrode

被引：17

作者：

Dimitrijevic, Teodora ^{[1
]}

Vulic, Predrag ^{[2
]}

Manojlovic, Dragan ^{[1
]}

Nikolic, Aleksandar S. ^{[1
]}

Stankovic, Dalibor M. ^{[3
]}

机构：

[1] Univ Belgrade, Fac Chem, Belgrade 11000, Serbia

[2] Univ Belgrade, Fac Geol, Belgrade 11000, Serbia

[3] Univ Belgrade, Fac Chem, Innovat Ctr, Belgrade 11000, Serbia

来源：

ANALYTICAL BIOCHEMISTRY | 2016年 / 504卷

关键词：

Cobalt and nickel ferrite; Microwave synthesis; Amperometry; SEM; XRPD; VITAMIN-C; URIC-ACID; JUICE;

D O I：

10.1016/j.ab.2016.03.020

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

In this study, a novel electrochemical sensor for quantification of ascorbic acid with amperometric detection in physiological conditions was constructed. For this purpose, cobalt and nickel ferrites were synthesized using microwave and ultrasound assistance, characterized by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and X-ray powder diffraction (XRPD), and used for modification of glassy carbon paste electrode (GCPE). It was shown that introducing these nanoparticles to the structure of GCPE led to increasing analytical performance. Co ferrite modified GCPE (CoFeGCPE) showed better characteristics toward ascorbic acid sensing. The limit of detection (LOD) obtained by sensor was calculated to be 0.0270 mg/L, with linear range from 0.1758 to 2.6010 mg/L. This sensor was successfully applied for practical analysis, and the obtained results demonstrated that the proposed procedure could be a promising replacement for the conventional electrode materials and time-consuming and expensive separation methods. (C) 2016 Elsevier Inc. All rights reserved.

引用

页码：20 / 26

页数：7

共 24 条

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