Simultaneous determination of vitamins B2, B6 and C using silver-doped poly(L-arginine)-modified glassy carbon electrode

被引：21
|
作者：
Liu, G. [1 ]
Wang, Y. M. [1 ]
Sun, D. M. [1 ]
机构：
[1] Huaibei Normal Univ Huaibei, Sch Chem & Mat Sci, Huaibei 235000, Peoples R China
来源：
JOURNAL OF ANALYTICAL CHEMISTRY | 2016年 / 71卷 / 01期
关键词：
silver doped poly(L-arginine); vitamin B-2; vitamin C; vitamin B-6; modified electrode; ELECTROCATALYTIC OXIDATION; AQUEOUS-SOLUTION; PASTE ELECTRODE; FILM; SPECTROPHOTOMETRY; VOLTAMMETRY; RIBOFLAVIN; COMPLEX; SYSTEM; SENSOR;
D O I：
10.1134/S1061934815120114
中图分类号：
O65 [分析化学];
学科分类号：
070302 ; 081704 ;
摘要：
The silver doped poly(L-arginine)-modified glassy carbon electrode was prepared by electropolymerization. Cyclic voltammetry and electrochemical impedance spectroscopy were used to study the electrochemical properties of the modified electrode. The modified electrode exhibits good electrocatalytic activity for the oxidation of vitamin B-2 (VB (2)), vitamin C (VC) and vitamin B-6 (VB (6)). Under optimal conditions, VB2, VC and VB6 are oxidized at-0.298, 0.317 and 1.058 V, respectively, at the modified electrode using linear sweep voltammetry method. The linear ranges for VB2, VC and VB6 are 1.0 x 10(-7)-2.3 x 10(-5), 5.0 x 10(-6)-4.0 x 10(-3) and 1.0 x 10(-5)-3.0 x 10(-3) M, respectively, and the detection limits are 8 x 10(-8), 3 x 10(-6) and 5 x 10(-6) M. The modified electrode has been successfully applied to simultaneous determination VB2, VC and VB6 in multivitamin tablets with satisfactory results.
引用
收藏
页码：102 / 109
页数：8
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