Simultaneous determination of Sunset Yellow and Tartrazine in soft drinks on carbon-paste electrode modified by silica impregnated with cetylpyridinium chloride

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

doi:10.1007/s11694-019-00115-6

Cited by 38 publications

(23 citation statements)

References 44 publications

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“…As can be seen (Figure a‐b), with an increase of pH the oxidation current increases and reaches its maximum value at pH 2, and then begins to decrease. 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%

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%

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

2020

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“…This indicates the irreversibility of the oxidation of the azo dye [31], and a similar behavior of azo dyes was noted by many authors on various electrodes [12, 19, 25–27]. Similar effects were observed in the study of the redox behavior of Tartrazine [30] and Carmoisine [29], which indicates a tendency to rapid oxidative destruction of the azogroup after primary oxidation.…”

Section: Resultssupporting

confidence: 84%

“…With a decrease in the medium acidity from pH 2 to pH 10, the oxidation current of Allura Red AC first rapidly, and then gradually decreases. Based on studies conducted previously [29,30], such a pH effect on the oxidation current of azo dyes is typical regardless of the substituents in the dye structure, and is probably a property of the azo group. Taking into account the information on the state of azo dyes in solutions [32,33], it can be assumed that the oxidation current of azo dyes is related to the degree of protonation of the azo group, which promotes oxidation.…”

Section: The Effect Of Ph On the Oxidation Of Allura Red Acmentioning

confidence: 95%

“…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]. This work is devoted to studying the possibility of determining Allura Red AC in jelly candies using a carbon paste electrode modified by silica gel with impregnated cetylpyridinium chloride.…”

Section: Introductionmentioning

confidence: 99%

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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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“…This ratio is line with previous reports of amaranth [ 27 , 28 , 29 ], tartrazine [ 30 , 31 ], and sunset yellow [ 25 , 32 ]. The electrochemical mechanism of amaranth, sunset yellow and tartrazine may be summarized as follow [ 33 ]: Dye − 2e − 1H + →Dye (ox) where dye refers to amaranth, sunset yellow, and tartrazine. On the other hand, the slope value between E(CA) vs. pH was almost close to the theoretical value, indicating that the number of protons was equal to the number of electrons involved in the reaction.…”

Section: Resultsmentioning

confidence: 99%

Disposable Electrochemical Sensor for Food Colorants Detection by Reduced Graphene Oxide and Methionine Film Modified Screen Printed Carbon Electrode

et al. 2021

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A facile synthesis of reduced graphene oxide (rGO) and methionine film modified screen printed carbon electrode (rGO-methionine/SPCE) was proposed as a disposable sensor for determination of food colorants including amaranth, tartrazine, sunset yellow, and carminic acid. The fabrication process can be achieved in only 2 steps including drop-casting of rGO and electropolymerization of poly(L-methionine) film on SPCE. Surface morphology of modified electrode was studied by scanning electron microscopy (SEM). This work showed a successfully developed novel disposable sensor for detection of all 4 dyes as food colorants. The electrochemical behavior of all 4 food colorants were investigated on modified electrodes. The rGO-methionine/SPCE significantly enhanced catalytic activity of all 4 dyes. The pH value and accumulation time were optimized to obtain optimal condition of each colorant. Differential pulse voltammetry (DPV) was used for determination, and two linear detection ranges were observed for each dye. Linear detection ranges were found from 1 to 10 and 10 to 100 µM for amaranth, 1 to 10 and 10 to 85 µM for tartrazine, 1 to 10 and 10 to 50 µM for sunset yellow, and 1 to 20 and 20 to 60 µM for carminic acid. The limit of detection (LOD) was calculated at 57, 41, 48, and 36 nM for amaranth, tartrazine, sunset yellow, and carminic acid, respectively. In addition, the modified sensor also demonstrated high tolerance to interference substances, good repeatability, and high performance for real sample analysis.

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Simultaneous determination of Sunset Yellow and Tartrazine in soft drinks on carbon-paste electrode modified by silica impregnated with cetylpyridinium chloride

Cited by 38 publications

References 44 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

Disposable Electrochemical Sensor for Food Colorants Detection by Reduced Graphene Oxide and Methionine Film Modified Screen Printed Carbon Electrode

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