Ruthenium tris(2,2′)bipyridyl-modified oxidized boron-doped diamond electrode for the determination of Vitamin B6 in the presence of Vitamins B1 and B2

Wu, Jing; Lei, Cun‐Xi; Yang, Haifeng; Wu, Xiaoyun; Shen, Guo‐Li; Yu, Ru‐Qin

doi:10.1016/j.snb.2004.11.009

Cited by 20 publications

(9 citation statements)

References 20 publications

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“…phenomenon was also observed from the other authors [4,15,28] and can be explained with pK a2 value of 8.9. Higher pH is followed with formation of hemiacetal form with negligible presence of electroactive free aldehyde.…”

Section: Accepted M Manuscriptsupporting

confidence: 80%

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Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Kuzmanović

Khan

Mehmeti

et al. 2016

Diamond and Related Materials

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Pyridoxine (vitamin B 6 , VB 6) was detected in pharmaceutical preparation and human urine samples by employing differential pulse voltammetry (DPV) at unmodified boron doped electrode. In Britton-Robinson buffer solution (BRBS) at pH 6 VB 6 provides well defined oxidation peak at around +1.05 V vs. Ag/AgCl (3M KCl). The influence of most of the interferents present in real samples, supporting electrolyte and DPV parameters were investigated. A VB 6 sensor with and linear range from 7 to 47 and a detection limit of 3.76 was obtain after optimization. Repeatability of the proposed procedure calculated after 7 measurements of 9 and 30 µM of VB 6 were 3.6 and 2.4 %, respectively. Proposed methodology was successfully applied for the determination of VB 6 in real samples, and from obtained results it can be concluded that proposed analytical procedure can be inexpensive alternative to the widely used separation methods.

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Section: Accepted M Manuscriptsupporting

confidence: 80%

“…These methods employ different electrodes such as carbon paste electrode [11], carbon paste electrode modified with vanadyl(IV)-Salen complex [12], chemically-modified glassy carbon electrodes [13], glassy carbon [14], ruthenium tris(2,2´)bipyridyl-modified oxidized boron-doped diamond electrode [15].…”

Section: Introductionmentioning

confidence: 99%

Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Kuzmanović

Khan

Mehmeti

et al. 2016

Diamond and Related Materials

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“…Sensitive VB6 determination has a great importance in two main branches, namely in the clinical diagnosis and food quality control. Consequently, a lot of spectrophotometric , chromatographic including a reference standard protocol ČSN EN 14164 (560056), and electrochemical methods have been developed for its monitoring.…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion®

et al. 2019

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A new voltammetric method for simultaneous determination of caffeine and pyridoxine present in different types of commercial energy drinks has been developed. This electroanalytical method is based on anodic oxidation of these biologically active nitrogen‐containing heterocycles at glassy carbon electrode covered with thin layer of sulfonated fluoropolymer Nafion® using differential pulse voltammetry in 0.1 M Britton‐Robinson buffer of pH 4.5 at potential step 5 mV, potential amplitude 70 mV, and scan rate 50 mV/s. Linear ranges for caffeine and pyridoxine determination were 63.1–600 μM and 7.5–200 μM with the detection limits of 18.9 and 2.2 μM, respectively. It was validated using high‐performance liquid chromatography with spectrophotometric detection. Obtained results have shown that voltammetric approach is very simple and low‐cost analytical method which can be used for routine determination of caffeine and pyridoxine in energy drinks.

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“…Several analytical methods have been frequently used for the determination of TM, e.g. high‐performance liquid chromatography (HPLC), Resonance Rayleigh Scattering (RRS), capillary electrophoresis, electrochemical analysis, spectrophotometry, chemiluminescence, spectrofluorimetry . It is generally known that chromatography provides sensitive and specific multi‐analytical results, while it is time‐consuming and depends on highly skilled personnel and costly equipment; capillary electrophoresis, which is quick and efficient has a poor reproducibility; the electrochemical method is of high selectivity, long‐term reliability and cost‐effective as an analytical technique, yet much time may be spent on pretreatment to obtain functionalized electrode; the spectrofluorometric technique is simple, sensitive, less‐waste and easy operation, all things considered, which can be regarded as an option for the determination of TM.…”

Section: Introductionmentioning

confidence: 99%

Construction of a novel turn‐on–off fluorescence sensor used for highly selective detection of thiamine via its quenching effect on o‐phen‐Zn²⁺ complex

Zhang

Chen

et al. 2018

Luminescence

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In this work, a simple and selective fluorescence sensor approach called 'turn-on-off' for the determination of thiamine (TM) has been developed. As known, the o-phenanthroline (o-phen) has inner fluorescence, though when reacted with zinc ions to form the o-phen-Zn complex the fluorescence intensity was enhanced effectively, while upon addition of TM into the o-phen-Zn complex solution, the intensity of the system was gently quenched, which was termed the 'turn-on-off' probe. Notably, the method possessed highly selective, sensitive determination for TM with a detection limit of 0.25 μmol L and the reduced fluorescence intensity was proportional to the concentration of TM in the range 0.84-80.0 μmol L . Besides, the proposed mechanism was also investigated through exploring the Fourier transform infrared (FT-IR), nuclear magnetic resonance (NMR) spectroscopy. Furthermore, this manner was successfully applied into practical samples for TM detection with satisfactory results.

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Ruthenium tris(2,2′)bipyridyl-modified oxidized boron-doped diamond electrode for the determination of Vitamin B6 in the presence of Vitamins B1 and B2

Cited by 20 publications

References 20 publications

Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion®

Construction of a novel turn‐on–off fluorescence sensor used for highly selective detection of thiamine via its quenching effect on o‐phen‐Zn²⁺ complex

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Ruthenium tris(2,2′)bipyridyl-modified oxidized boron-doped diamond electrode for the determination of Vitamin B6 in the presence of Vitamins B1 and B2

Cited by 20 publications

References 20 publications

Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Determination of pyridoxine (vitamin B6) in pharmaceuticals and urine samples using unmodified boron-doped diamond electrode

Simultaneous Determination of Caffeine and Pyridoxine in Energy Drinks using Differential Pulse Voltammetry at Glassy Carbon Electrode Modified with Nafion®

Construction of a novel turn‐on–off fluorescence sensor used for highly selective detection of thiamine via its quenching effect on o‐phen‐Zn2+ complex

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Product

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Construction of a novel turn‐on–off fluorescence sensor used for highly selective detection of thiamine via its quenching effect on o‐phen‐Zn²⁺ complex