Voltammetric determination of pyridoxine (Vitamin B6) at a carbon paste electrode modified with vanadyl(IV)–Salen complex

Teixeira, Marcos F.S.; Marino, Glimaldo; Dockal, Edward R.; Cavalheiro, Éder Tadeu Gomes

doi:10.1016/j.aca.2003.11.046

Cited by 72 publications

(32 citation statements)

References 32 publications

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“…An irreversible two-electron oxidation voltammetric peak appeared in both cases when 0.005 mol L -1 SMX was present in the solution [29,40]. Also, much lower background current that was obtained for the CPE as compared with the solid glassy carbon, suggests that the proposed CPE electrode could be more sensitive for SMX oxidation [6][7][8][9][10][11][12][13][14][15][16]. The higher background current observed for the glassy carbon electrode in Figure 5B stems from the oxygen evolution [43].…”

Section: Electrochemical Properties Of Cpe In Different Electrolyte Smentioning

confidence: 84%

“…This electrode consists of a mixture of carbon powder and a non-electroactive liquid binder and offers a broad potential window, low residual current (background), unique surface characteristics, low cost, and versatile preparation [6][7][8][9][10][11][12][13][14][15][16]. For this reason, CPE has been widely employed to determine the sulfamethoxazole (SMX) by the voltammetric analysis.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Eleotério

Balbino²,

Andrade³

et al. 2018

J. Electrochem. Sci. Eng.

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Section: Electrochemical Properties Of Cpe In Different Electrolyte Smentioning

confidence: 84%

Section: Introductionmentioning

confidence: 99%

Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Eleotério

Balbino²,

Andrade³

et al. 2018

J. Electrochem. Sci. Eng.

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“…The linearity and LOD for VB 6 by this electrochemical method was compared with other method, such as spectrophotpmetric method, 1 chromatography 9 and voltammetric methods using a pretreated electrode 12 or modified electrodes. 13,14 The results were listed in Table 1. It indicated that the presented method possessed the advantages of wide linearity range and very low detection limit for VB 6 .…”

Section: Analysis Application Optimization Of Experimental Parametersmentioning

confidence: 99%

“…12 Its linear concentration range of VB 6 is 2.5 × 10 −6 -7.5 × 10 . After that, two modified electrodes has been used to determine VB 6 , one is a carbon paste electrode modified with vanadyl(IV)-salen complex, 13 the other is a glassy carbon electrode modified with carbon nanotubes.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Investigation of Vitamin B_6 at a Glassy Carbon Electrode and Its Application in Determination

Wu¹,

Song²

2008

Bulletin of the Korean Chemical Society

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The voltammetic behavior of Vitamin B 6 (VB 6 ) was studied at a glassy carbon electrode in phosphate buffers using cyclic, linear sweep and differential pulse voltammetry. The oxidation process was shown to be irreversible over the entire pH range studied (4.0-10.0) and was adsorption controlled. The adsorption amount of VB 6 on the glassy carbon electrode was examined by chronocoulometry and the value of án á , product of transfer coefficient and number of electrons transferred in the rate determining step, was determined from Tafel plot. VB 6 was determined by differential pulse voltammetry and the peak current was found linearly with its concentration in the range of 3 × 10 −7 -2 × 10 −4 mol L −1. The detection limit was 1 × 10 −7 mol L −1. The procedure was successfully applied for the assay of VB 6 in tablets.

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“…7 Recently, several works involving the use of modified electrodes in voltammetry have been published. [8][9][10] The working electrodes may be modified to improve the analytical signal, the detection range, the sensitivity, and the selectivity of this technique. The determination of PN in drugs using a carbon paste electrode modified with Cu II hexacyanoferrate(III) has been proposed.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric determination of pyridoxine (vitamin B6) in drugs using a glassy carbon electrode modified with chromium(III) hexacyanoferrate(II)

Cottica¹,

Nozaki²,

Nakatani³

et al. 2009

J. Braz. Chem. Soc.

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, respectivamente. O método proposto para a determinação voltamétrica da vitamina B 6 apresentou uma boa exatidão e os resultados experimentais demonstraram que o eletrodo de carbono vítreo modificado com hexacianoferrato(II) de Cr III apresenta um grande potencial para análise de piridoxina em amostras reais. Além disso, apresenta vantagens como uma resposta rápida, um baixo limite de detecção, baixo custo e simplicidade no desenvolvimento e aplicação. A CrIII hexacyanoferrate(II) (CrHCF)-modified glassy carbon electrode was used to determine pyridoxine (vitamin B 6 ) in three drugs by cyclic voltammetry. The influence of several parameters on the voltammetric electrode response was analyzed. The linear range found was of 1.33 × 10 -6 mol L -1 to 1.32 × 10 -5 mol L -1 of vitamin, with r = 0.9990 and relative standard deviation of 4.2%. The limits of detection and quantification were 3.46 × 10 -7 mol L -1 and 1.05 × 10 -6 mol L -1 , respectively. The voltammetric proposed method for determination of vitamin B 6 presented good accuracy and the experimental results demonstrated that the CrHCF-modified glassy carbon electrode has a large potential for the analysis of pyridoxine in real samples. Furthermore, it has the advantages of a fast response, a low detection limit, low cost, and simple development and application.

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Voltammetric determination of pyridoxine (Vitamin B6) at a carbon paste electrode modified with vanadyl(IV)–Salen complex

Cited by 72 publications

References 32 publications

Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Analysis of sulfamethoxazole by square wave voltammetry using new carbon paste electrode

Voltammetric Investigation of Vitamin B_6 at a Glassy Carbon Electrode and Its Application in Determination

Voltammetric determination of pyridoxine (vitamin B6) in drugs using a glassy carbon electrode modified with chromium(III) hexacyanoferrate(II)

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