Voltammetric determination of pyridoxine (Vitamin B6) by use of a chemically-modified glassy carbon electrode

Qu, Wenzhong; Wu, Kangbing; Hu, Shengshui

doi:10.1016/j.jpba.2004.07.016

Cited by 77 publications

(43 citation statements)

References 18 publications

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“…The current value related to the vitamin with modified glassy carbon electrode was that obtained by the difference of the current observed at 0.88 V in the presence and in the absence of PN. This potential value is close to the value found in the literature for the oxidation of PN in an unmodified glassy carbon electrode, 0.85 V. 8 …”

Section: Preparation and Analysis Of Drug Samplessupporting

confidence: 90%

“…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%

“…3, 2009 Voltammetric response of PN with a glassy carbon electrode chemically modified with carbon nanotubes has also been evaluated. 8 The combined use of glassy carbon electrodes modified with hexacianoferrate complexes may be instrumental in the determination of PN. Thus, the present work sought to use a glassy carbon electrode modified with Cr III hexacyanoferrate(II) 11 (CrHCF) to determine vitamin B 6 in drugs.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Preparation and Analysis Of Drug Samplessupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…Relative standard deviation is of smaller value pointing to the high reproducibility of the present method. In addition statistical data obtained using F-test shows the high significance of the results obtained by the present method 29 .…”

Section: Square Wave Voltammetrysupporting

confidence: 51%

Fractional Analysis of Ascorbic Acid and Dopamine by Copper Nanoparticles Electrodeposited onto Gold Electrode

Awad¹,

Kassem²,

Hameed³

et al. 2017

Orient. J. Chem

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The electrochemical behavior of ascorbic acid (AA) and dopamine (DA) at copper nanoparticles modified polycrystalline gold electrode (nano-Cu/Au) has been studied using cyclic voltammetry. The modified nano-Cu/Au electrodes have been assembled using cyclic voltammetric techniques. Nano-Cu/Au have been successfully differentiated the electrochemical response of the two species, in contrary to the bare polycrystalline gold electrode at which the electrochemical response of the two species were overlapped, and only one anodic peak for the two species is obtained. At the optimized conditions, both species have been simultaneously determined using square wave voltammetry. Acceptable rectilinear ranges for both species have been obtained with correlation coefficients of 0.998 and 0.995 for DA and AA, respectively. The limits of detection and quantification (LOD and LOQ) were calculated and found to be 1.816 and 6.05 for DA and 34.57 and 115.25 for AA. The relative standard deviation (RSD) for both DA and AA were deliberated to be 2.04 and 0.376 %, respectively.

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“…However, only two of the papers mentioned above [32,39] used ED to determine pyridoxine (B6), cyanocobalamin (B12), nicotinamide (VPP), and ascorbic acid (C). ED of water-soluble vitamins in pharmaceutical preparations and food has been performed with good results for B6, B12, C and biotin (H) [40][41][42][43][44]. In addition, quality control in the modern food industry using synthetic vitamins needs not only very powerful separation techniques, but also cheap methods to reduce costs for the industry.…”

Section: Introductionmentioning

confidence: 99%

A fast and reliable route integrating calibration and analysis protocols for water‐soluble vitamin determination on microchip‐electrochemistry platforms

et al. 2006

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A novel analytical route to determine water-soluble vitamins (B group and C) using single channel microchip-electrochemistry platforms is presented. The electrochemical detection protocol was carefully optimized, and it was shown that it was crucial to use 1 M nitric acid in the detector compartment to detect folic acid. A phosphate buffer (pH 6, 10 mM) and a separation voltage of 2 kV gave the complete separation of vitamins in less than 130 s, with good reproducibility (RSDs less than 10%) and accuracy (error less than 9%). In addition, a methodological innovation integrating calibration and analysis of water-soluble vitamins on the chip is also proposed. The strategy consisted in sequentially using both reservoirs (named calibration and analysis reservoirs) as well as a calibration factor (defined as signal/concentration of analyte). The analytical route required 350 s in the overall protocol (employing 130 s in calibration plus 130 s in analysis), an improvement over the times used in both conventional and microchip protocols.

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Voltammetric determination of pyridoxine (Vitamin B6) by use of a chemically-modified glassy carbon electrode

Cited by 77 publications

References 18 publications

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

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

Fractional Analysis of Ascorbic Acid and Dopamine by Copper Nanoparticles Electrodeposited onto Gold Electrode

A fast and reliable route integrating calibration and analysis protocols for water‐soluble vitamin determination on microchip‐electrochemistry platforms

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