Fabrication of Fast and Sensitive Nanostructure Voltammetric Sensor for Determination of Curcumin in the Presence of Vitamin B<sub>9</sub> in Food Samples

Taher, Mohammad Ali; Karimi-Maleh, Hassan

doi:10.1002/elan.201600252

Cited by 31 publications

(12 citation statements)

References 57 publications

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“…Also, a plot of peak height (Ip) vs. the square root of scan rate (v 1/2 ) was found to be linear in the wide range of 20-300 mV/s. As depicted in Figure 4, a plot of log peak current with log scan rate gives a linear relationship with a slope of 0.437; This value close to the theoretical value of 0.5, indicates that the electrochemical oxidation of mirtazapine is controlled by diffusion processes [34].…”

Section: Effect Of Scan Ratesupporting

confidence: 74%

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

El-Shal

2019

Egypt. J. Chem.

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D EVELOPMENT of a disposable copper oxide nanoparticles modified screen-printed carbon electrode (CuONP/SPCE) as a quick and convenient method for determination of Mirtazapine (MZ) is studied. It was demonstrated that the nano-copper oxide (CuONP) on the SPCE could significantly enhance the electrochemical oxidation of MZ at pH7.0. The electrochemical response characteristics of MZ on the modified electrode were investigated by cyclic voltammetry (CV) and differential pulse voltammetry (DPV). Under the optimized experimental conditions, the analytical results showed linear responses over the range 66.6-662.3ng/mL. The detection and quantification limits, LOD and LOQ were 4.5, 13.4 ng/mL, respectively. The results indicate that the suggested sensor is highly suitable for clinical analysis, quality control determination of MZ in pharmaceutical formulations and spiked serum.

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Section: Effect Of Scan Ratesupporting

confidence: 74%

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

El-Shal

2019

Egypt. J. Chem.

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“…As depict in Figure S1, the oxidation peak current of SOT is linearly correlated with scan rates; I p (μA)=−20 μA+10.241 μA/(Vs −1 ) 1/2 ; R 2 =0.9990. This behaviour indicates that, the electrochemical oxidation of SOT is controlled by diffusion processes .…”

Section: Resultsmentioning

confidence: 99%

Incorporation of Tetrazolium Blue (TB)/Gold Nanoparticles (GNPs) into Carbon Paste Electrode: Application as an Electrochemical Sensor for the Sensitive and Selective Determination of Sotalol in Micellar Medium

et al. 2017

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The electrochemical oxidation of Sotalol (SOT) based on Tetrazolium Blue (TB)/gold nanoparticles (GNPs)‐modified carbon paste electrodes (CPE) have been studied in the presence of sodium lauryl sulphate (SLS). Cyclic voltammetry (CV), differential pulse voltammetry (DPV), chronoamperometry and electrochemical impedance spectroscopy (EIS) techniques have all been utilized within this study. GNPs and TB have a synergetic effect‐giving rise to highly improved electrochemical responses and provide an advantageous platform for the basis of an electrochemical sensor with excellent performance. The experimental parameters, electrodeposition time, pH and scan rate have all been examined and optimized. The sensing of SOT via DPV is found to exhibit a wide linear dynamic range of 1.0×10−7–7.5×10−4 M in pH 2. LOD and LOQ were calculated and found to correspond to 2.5×10−8 M and 8.3×10−8 M, respectively. The suggested sensor has been used successfully for SOT determination in pharmaceutical samples and human urine as real samples. Satisfactory recoveries of analyte from these samples are demonstrated indicating that the suggested sensor is highly suitable for clinical analysis, quality control and a routine determination of SOT in pharmaceutical formulations.

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“…With the scan rates, the peak potential of the cathodic peak at −0.60 V shifted to a negative potential with increasing the scan rates. This behavior showed that the reduction reaction is irreversible .…”

Section: Resultsmentioning

confidence: 99%

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

2017

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In this paper, a glassy carbon electrode (GCE) was modified with polyzincon. The modified electrode was used as a simple, inexpensive and highly sensitive electrochemical sensor for the determination of organophosphorus pesticide fenitrothion. To fabricate the electrochemical sensor, GCE was immersed in 0.10 mmol L−1 zincon solutions at pH 7.0 and then successively scanned between −1.00 to 2.20 V (vs. Ag/AgCl) at a scan rate of 70 mV s−1 for six cycles. The morphology and structure of the polyzincon were studied with atomic force microscopy and scanning electron microscopy. A comparison of the electrochemical behavior of fenitrothion on the unmodified and polyzincon modified‐GCE showed that in the modified electrode not only the oxidation peak current increased, but also the overpotential shifted to lower one. The experimental conditions such as sample solution pH, accumulation potential, and time were optimized. The differential pulse voltammetric responses of fenitrothion at potential about −0.60 V was used for the determination of fenitrothion. The peak current increased with increasing the concentration of fenitrothion in the range of 5 to 8600 nmol L−1 with a detection limit of 1.5 nmol L−1. Finally, the electrochemical sensor was used for the analysis of fenitrothion in water and fruit samples.

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Fabrication of Fast and Sensitive Nanostructure Voltammetric Sensor for Determination of Curcumin in the Presence of Vitamin B₉ in Food Samples

Abstract: 1Introduction Keywords: Curcumin · Vitamin B 9 · Cadmium oxide nanoparticles · Voltammetric sensor · Modified electrode [a] S.

Cited by 31 publications

References 57 publications

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

Incorporation of Tetrazolium Blue (TB)/Gold Nanoparticles (GNPs) into Carbon Paste Electrode: Application as an Electrochemical Sensor for the Sensitive and Selective Determination of Sotalol in Micellar Medium

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

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Fabrication of Fast and Sensitive Nanostructure Voltammetric Sensor for Determination of Curcumin in the Presence of Vitamin B9 in Food Samples

Abstract: 1Introduction Keywords: Curcumin · Vitamin B 9 · Cadmium oxide nanoparticles · Voltammetric sensor · Modified electrode [a] S.

Cited by 31 publications

References 57 publications

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

A Copper Oxide Nanoparticle Modified Screen-printed Electrode for Determination of Mirtazapine

Incorporation of Tetrazolium Blue (TB)/Gold Nanoparticles (GNPs) into Carbon Paste Electrode: Application as an Electrochemical Sensor for the Sensitive and Selective Determination of Sotalol in Micellar Medium

Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified‐glassy Carbon Electrode

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Fabrication of Fast and Sensitive Nanostructure Voltammetric Sensor for Determination of Curcumin in the Presence of Vitamin B₉ in Food Samples