Adsorption of anionic food azo dyes from aqueous solution by silica modified with cetylpyridinium chloride

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

doi:10.1007/s00706-018-2301-0

Cited by 12 publications

(8 citation statements)

References 30 publications

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“…A similar relationship was obtained for other azo dyes studied by us earlier . The form of the obtained dependence is consistent with the data on the interaction of azo dyes with the surface modifier CPE …”

Section: Resultssupporting

confidence: 91%

“…[34] The form of the obtained dependence is consistent with the data on the interaction of azo dyes with the surface modifier CPE. [31,34] To determine the ratio of protons and electrons who are involved in the process of Carmoisine oxidation the influence of pH onto oxidation potential ( Figure. 2c) was studied.…”

Section: The Effect Of Ph On the Oxidation Of Carmoisinementioning

confidence: 99%

“…It was found that silica impregnated with cetylpyridinium chloride has a high sorption ability with respect to the azo dye . In our previous studies the oxidation of Carmoisine on a bare CPE was described .…”

Section: Introductionmentioning

confidence: 98%

“…It was found that silica impregnated with cetylpyridinium chloride has a high sorption ability with respect to the azo dye. [31] In our previous studies the oxidation of Carmoisine on a bare CPE was described. [32] In this work, the possibility of using silica with impregnated cetylpyridinium chloride as CPE modifier for the determination of Carmoisine was studied.…”

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: Resultssupporting

confidence: 91%

Section: The Effect Of Ph On the Oxidation Of Carmoisinementioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

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 our previous studies it was shown that silica embedded with cetylpyridinium chloride is an effective sorbent for the adsorption of azo dyes from aqueous solutions [28]. It was also shown that some azo dyes can be determined using a carbon paste electrode with modification of this type of sorbent [29,30].…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Allura Red AC onto Carbone‐paste Electrode Modified by Silica with Embedded Cetylpyridinium Chloride

et al. 2020

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In current study the carbon‐paste electrode modified by silica with embedded cetylpyridinium chloride for determination of Allura Red AC have been developed. The optimal conditions were determined to be for the square‐wave voltammetric quantification: pH=2, Eads=300 mV, tads=300 s, amplitude – 40 mV, frequency – 25 Hz and potential scan rate is 250 mV sec−1. The calibration plot has linearity in the concentration ranges 0.04–0.2 μM and 0.2–1.00 μM. The LOD and LOQ are equal to 0.005 μM and 0.015 μM respectively. The crafted sensor has been applied successfully to model solutions and in jelly candies analysis with RSD no more than 10 %.

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Determination of Allura Red AC with a β‐Cyclodextrin‐Modified Carbon Paste Electrode

Pliuta

Снігур

2022

ChemistrySelect

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The problem of reducing the amount of the analyzed sample and waste during chemical analysis has recently received special attention. In this paper, a method relating to adsorptive stripping voltammetry, using a carbon paste electrode modified with β-Cyclodextrin were used for Allura Red AC determination in soft drinks. The redox behavior of the dye was studied using the developed sensor, and a mechanism for its oxidation was proposed. Under optimal analysis conditions, the instrumental range of determined concentrations is 0.16-4.9 μg/mL, and the LOQ is 0.21 μg/mL with an RSD below 10 %. The proposed methodology and developed sensor have been successfully applied to model solutions and soft drinks analysis.

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Adsorption of anionic food azo dyes from aqueous solution by silica modified with cetylpyridinium chloride

Cited by 12 publications

References 30 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

Voltammetric Determination of Allura Red AC onto Carbone‐paste Electrode Modified by Silica with Embedded Cetylpyridinium Chloride

Determination of Allura Red AC with a β‐Cyclodextrin‐Modified Carbon Paste Electrode

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