Differential pulse voltammetric determination of eugenol at a pencil graphite electrode

Sağlam, Özlem; Dilgin, Didem Giray; Ertek, Bensu; Dilgin, Yusuf

doi:10.1016/j.msec.2015.11.031

Cited by 44 publications

(19 citation statements)

References 41 publications

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“…α is assumed to be 0.5 for a totally irreversible electrode process . The Δ E p,1/2 is 41±2 mV, hence, the (1‐α) n α =1.16 and the number of electrons participating in the eugenol oxidation process equals to 2.3±0.1 that agree well with the reported earlier , .…”

Section: Resultssupporting

confidence: 90%

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

et al. 2017

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Amperometric sensor for eugenol based on glassy carbon electrode (GCE) modified with CeO2 nanoparticles dispersed in surfactant was fabricated. The effect of surfactant nature (sodium dodecylsulfate, cetylpyridinium bromide (CPB) and Brij® 35) on eugenol voltammetric behaviour was tested. In comparison to CeO2‐H2O/GCE, CeO2‐CPB/GCE showed 2.8‐fold increased current and 70 mV cathodic shift of potential in the diffusion‐controlled irreversible electrooxidation. The electrodes were characterized with SEM and EIS. CeO2‐CPB/GCE showed significantly lower charge transfer resistance (2.6±0.3 kΩ vs. 20±1 kΩ for CeO2‐H2O/GCE and 173±9 kΩ for GCE). Under conditions of DPV, the sensor linear dynamic range is 0.075‐75.0 μM of eugenol with the limits of detection (LOD) and quantification (LOQ) of 19.1 and 63.8 nM, respectively. The sensor exhibited high sensitivity, selectivity, good reproducibility and fast response and was applied for the real samples analysis (essential oils and clove spices). The results obtained correspond well to the data of spectrophotometric method.

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Section: Resultssupporting

confidence: 90%

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

et al. 2017

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“…Essential oils with lower content of eugenol are cinnamon oil (Cinnamomum altissimum, Cinnamomum verum, or Cinnamomum cassia)-1.2-14.7% [6][7][8][9][10] and laurel oil (Laurus nobilis)-1.4-2.2% [11]. These oils rich in eugenol are used in dietary supplements, cosmetics, aromatherapy, and phytotherapy, due to their anesthetic, antifungal, and insecticidal properties [7][8][9][10][11][12][13][14][15].…”

Section: Phenolic Terpenoids: Eugenol Carvacrol and Thymolmentioning

confidence: 99%

Multivariate approach in voltammetric identification and simultaneous determination of eugenol, carvacrol, and thymol on boron-doped diamond electrode

Kowalcze

Jakubowska

2019

Monatsh Chem

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The paper presents multivariate partial least-squares calibration model defined for the identification and simultaneous determination of phenolic terpenoids-eugenol, carvacrol, and thymol-by means of the differential pulse voltammetry. For the first time, using boron-doped diamond electrode signal, electrochemical distinction of carvacrol and thymol, despite the short distance between the peaks (15 mV), was described. The analytes' concentrations applied in the calibration model were selected using the 3-factorial central composite design. The multivariate partial least-squares model, with optimized data pre-processing, was used for determination of eugenol, carvacrol, and thymol in the concentration ranges of 0.77-13.86, 0.58-10.40, and 0.73-7.32 mg/dm 3 , respectively. The quality of the method, expressed by the root-mean-squared error of calibration was 0.55, 0.20, and 0.26 mg/dm 3 for the specified analytes. The recovery in the analysis of the pure signals was 98.92%, 101.62%, and 101.46%, what confirmed the possibility of clearly distinguishing the thymol and carvacrol peaks. In the spiked honey samples, the accuracy of eugenol, carvacrol, and thymol determination, expressed by the root-meansquared error of prediction, was in the range 0.20-0.83 mg/dm 3 , and recovery in the range 80.9-111.9%. Application of the presented model not only enables electrochemical identification and simultaneous determination of eugenol, carvacrol, and thymol, but also allows rapid, accurate, and low-cost verification of authenticity of the commercial products.

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“…These electrodes can easily be polished in sandpaper, what allows quick electrode preparation between analyses. Moreover, these devices have demonstrated LOD values akin to those observed in conventional electrodes (Dilgin, Karakaya, 2016;Saglam et al, 2016).…”

Section: Introductionmentioning

confidence: 89%

Piroxicam voltammetric determination by ultra low cost pencil graphite electrode

Macêdo

Alecrim

Neto

et al. 2020

Braz. J. Pharm. Sci.

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Piroxicam (PRX) was determined in pharmaceutical capsules with differential pulse voltammetry (DPV) in a three electrode system consisting of a pencil graphite electrode (PGE) as working electrode, a Pt wire and a reference electrode of Ag/AgCl/KCl 3 M. An irreversible oxidation peak was observed in E pa c.a. 0.6 V, which correlates to the oxidation of PRX. The coefficient of linear correlation obtained was 0.9946, with limit of detection of 2.1 µM and limit of quantification of 4.7 µM. PGE assays showed good analytical performance compared to high performance liquid chromatography and spectrophotometry, showing the potential to be further developed and employed in quick and simple analyses.

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Differential pulse voltammetric determination of eugenol at a pencil graphite electrode

Cited by 44 publications

References 41 publications

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Multivariate approach in voltammetric identification and simultaneous determination of eugenol, carvacrol, and thymol on boron-doped diamond electrode

Piroxicam voltammetric determination by ultra low cost pencil graphite electrode

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Differential pulse voltammetric determination of eugenol at a pencil graphite electrode

Cited by 44 publications

References 41 publications

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO2 Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO2 Nanoparticles and Surfactants

Multivariate approach in voltammetric identification and simultaneous determination of eugenol, carvacrol, and thymol on boron-doped diamond electrode

Piroxicam voltammetric determination by ultra low cost pencil graphite electrode

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Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants

Highly Sensitive Amperometric Sensor for Eugenol Quantification Based on CeO₂ Nanoparticles and Surfactants