Development of a novel voltammetric sensor for the determination of quercetin on an electrochemically pretreated carbon-paste electrode

Pliuta, Konstantin; Чеботарев, А. Н.; Koicheva, Anastasiya; Bevziuk, Kateryna; Снігур, Д. В.

doi:10.1039/c7ay02953e

Cited by 16 publications

(11 citation statements)

References 35 publications

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“…When developing new voltammetric sensors, various modification methods can be used to increase the sensitivity of analyte determination. For example, you can use the electrochemical pretreated electrodes, carbon nanomaterials, metal nanoparticles and their oxides, as well as materials that increase the sorption of analyte on the surface of the electrode…”

Section: Introductionmentioning

confidence: 99%

“…Comparative characteristics of the proposed sensors are presented in Table 1 When developing new voltammetric sensors, various modification methods can be used to increase the sensitivity of analyte determination. For example, you can use the electrochemical pretreated electrodes, [18][19][20][21] carbon nanomaterials, [16,[22][23][24] metal nanoparticles and their oxides, [25][26][27][28] as well as materials that increase the sorption of analyte on the surface of the electrode. [29,30] Cetylpyridinium chloride is more cost-effective CPE modifier than carbon nanomaterials.…”

Section: Introductionmentioning

confidence: 99%

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Determination of Carmoisine onto Carbon‐Paste Electrode Modified by Silica Impregnated with Cetylpyridinium Chloride

2020

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In this paper a simple, cheap and sensitive electrochemical sensor for determination of Carmoisine in soft drinks was developed. Carmoisine is a synthetic azo dye which is used in food products. In this work effective voltammetric sensor based on carbon‐paste electrode modified by silica impregnated with cetylpyridinium chloride to increase the sensitivity of Carmoisine detection was proposed. The voltammetric behavior of Carmoisine, the number of protons and electrons involved in the oxidation process were studied. The probable mechanism of Carmoisine oxidation on the developed sensor was suggested. The optimal conditions for the square‐wave voltammetric determination of Carmoisine onto developed sensor were found to be: pH=2; Eads=400 mV; tads=300s; A=50 mV; ν=25 Hz, υ=100 mV/s. The calibration curve was linear in the range of Carmoisine concentrations 0,08‐1 μM. The proposed method was successfully tested in the analysis of Carmoisine in soft drinks with RSD not more than 5%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Determination of Carmoisine onto Carbon‐Paste Electrode Modified by Silica Impregnated with Cetylpyridinium Chloride

2020

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“…Moreover, the linear equation between i p and ν was obtained (Figure b), which is fitted as i p (μA)=181.58 ν (V/s)+9.07, with R 2 =0.992. This proves that the electrochemical reduction of AAs on MoS 2 @MWCNTs/GCE is an electrode reaction process controlled by adsorption step .…”

Section: Resultsmentioning

confidence: 52%

Glassy Carbon Electrode Modified via Molybdenum Disulfide Decorated Multiwalled Carbon Nanotubes for Sensitive Voltammetric Detection of Aristolochic Acids

Wang

Mamat

et al. 2019

Electroanalysis

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In this study, a molybdenum disulfide/multiwalled carbon nanotubes (MoS2@MWCNTs) nanocomposite was synthesized by employing a simple hydrothermal method. The flower‐like structure of the MoS2@MWCNTs was characterized via scanning electron microscopy (SEM) and transmission electron microscopy (TEM), and the load of crystalline MoS2 was verified via X‐ray diffraction (XRD) and energy‐dispersive spectroscopy (EDS). The as‐prepared MoS2@MWCNTs nanocomposite was used to modify glassy carbon electrode (GCE) as an electrochemical sensor for detecting aristolochic acids (AAs). With the optimized parameters, the proposed electrochemical sensor exhibited good sensitivity and a broad linear concentration range for detecting AAs from 0.2 to 10 μmol/L and 10 to 100 μmol/L, with the sensitivity of −3.10 μA/(μmol/L) and −0.91 μA/(μmol/L), respectively. The detection limit was also calculated as 0.06 μmol/L (S/N=3) based on the low background signal. Furthermore, the modified electrochemical sensor exhibited good selectivity, repeatability, reproducibility, and stability, thus showing potential application for detecting AA in chinese herbs with good mean recovery and accuracy. In other words, the MoS2@MWCNTs/GCE can be used as an excellent platform to detect AAs.

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“…21 We note that a similar dependence was obtained by studying the effect of the pH of the medium on the oxidation current of quercetin on ECA-CPE. 19 When studying the influence of the pH of the medium on the potentials of the first and second anodic peak of morin, the following dependences (E pa = f (pH)) were obtained: E pa1 = -56.42 pH + 640.2 (R 2 = 0.9990) and E pa2 = -59.47 pH + 799.24 (R 2 = 0.992). The number of protons (m) per electron (n) for the first oxidation peak (m/n = 0.96) and the second oxidation peak (m/n = 1.01) was calculated from the tangents of the slopes of the reduced dependences.…”

Section: Effect Of Phmentioning

confidence: 98%

“…Previously, we established optimal conditions for the electrochemical activation of a CPE, 18 and a highly sensitive sensor for the determination of quercetin (a morin isomer) was developed. 19 The purpose of this paper is to investigate the electrochemical behavior of morin on an electrochemically activated CPE and to develop a voltammetric sensor for its determination.…”

Section: Introductionmentioning

confidence: 99%

Determination of morin on an electrochemically activated carbon-paste electrode

Чеботарев¹,

Pliuta²,

Снігур³

2018

Turk J Chem

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In this paper, the possibility of using an electrochemically activated carbon-paste electrode (ECA-CPE) for the determination of morin has been studied. It is established that the oxidation current increases 1.85 times in comparison with untreated CPE. The adsorption nature of the anodic current and the number of electrons taking part in the oxidation of morin on ECA-CPE was established. The optimal conditions for the determination of morin (pH = 4, E ads = 200 mV, t ads = 180 s) were established. Using square-wave voltammetry (A = 35 mV, ν = 25 Hz, υ = 100 mV/s) it is possible to determine morin in the range of concentrations of 6-0.8 µM (with 0.314 µA/µM sensitivity) and 0.8-0.16 µM (with 0.557 µA/µM sensitivity). The developed sensor was tested for the determination of morin in model solutions and Coffea arabica extracts with RSD lower than 4.5%.

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Development of a novel voltammetric sensor for the determination of quercetin on an electrochemically pretreated carbon-paste electrode

Abstract: In this work, a simple, cheap and sensitive sensor for quercetin voltammetric determination was developed.

Cited by 16 publications

References 35 publications

Determination of Carmoisine onto Carbon‐Paste Electrode Modified by Silica Impregnated with Cetylpyridinium Chloride

Determination of Carmoisine onto Carbon‐Paste Electrode Modified by Silica Impregnated with Cetylpyridinium Chloride

Glassy Carbon Electrode Modified via Molybdenum Disulfide Decorated Multiwalled Carbon Nanotubes for Sensitive Voltammetric Detection of Aristolochic Acids

Determination of morin on an electrochemically activated carbon-paste electrode

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