Voltammetric monitoring of electrochemical reduction of riboflavin using silver solid amalgam electrodes

被引：56

作者：

Bandzuchova, Lenka ^{[1
]}

Selesovska, Renata ^{[1
]}

Navratil, Tomas ^{[2
]}

Chylkova, Jaromira ^{[1
]}

Novotny, Ladislav ^{[1
]}

机构：

[1] Univ Pardubice, Fac Chem Technol, Inst Environm & Chem Engn, Pardubice 53210, Czech Republic

[2] J Heyrovsky Inst Phys Chem AS CR, Vvi, Prague 18223 8, Czech Republic

来源：

ELECTROCHIMICA ACTA | 2012年 / 75卷

关键词：

Riboflavin; Determination; Mercury meniscus modified silver solid amalgam electrode; Polished silver solid amalgam electrode; Differential pulse voltammetry; ADSORPTIVE STRIPPING VOLTAMMETRY; ELIMINATION VOLTAMMETRY; COMPOSITE ELECTRODE; FOLIC-ACID; CHROMATOGRAPHIC DETERMINATION; PHOTOCHEMICAL DEGRADATION; AQUEOUS-SOLUTION; LINEAR SCAN; DNA; SPECTROSCOPY;

D O I：

10.1016/j.electacta.2012.05.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The voltammetric behavior of riboflavin (RF), an important compound belonging to the group of vitamins B, has been investigated using mercury meniscus modified electrode (m-AgSAE) and polished silver solid amalgam electrode (p-AgSAE). Obtained results were compared with those obtained using hanging mercury drop electrode (HMDE). Cyclic voltammetry (CV), direct current voltammetry (DCV) and differential pulse voltammetry (DPV) have been applied for investigation of electrochemical behavior of RF on the above mentioned electrodes. Optimum conditions for DPV determination of RF have been found in acetate buffer of pH 5 for m-AgSAE and HMDE, and in Britton-Robinson (BR) buffer of pH 3 for p-AgSAE. The limits of detection amounted to 8.2 x 10(-10) mol L-1 (m-AgSAE) and 1.3 x 10(-9) mol L-1 (p-AgSAE). DPV with optimized parameters was utilized for successful determination of RF in 2 vitamin preparations. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：316 / 324

页数：9

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