Electrochemical Determination of Tartrazine Using a Graphene/Poly(L-Phenylalanine) Modified Pencil Graphite Electrode

Tahtaisleyen, Selen; Gördük, Özge; Şahin, Yücel

doi:10.1080/00032719.2020.1716242

Cited by 55 publications

(30 citation statements)

References 42 publications

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“…The values of charge transfer resistance were determined by fitting the data utilizing an appropriate corresponding circuit to be 105 and 723 Ω for the bare PGE and PGA/PGE, respectively. The findings here show that PGA/PGE for Fe(CN)64-/3-had a higher electron transfer rate and capacity than the bare PGE (18). SEM examinations were performed for determining the morphological properties of the PGA/PGE.…”

Section: Research Articlementioning

confidence: 70%

“…In the last few decades, using the electropolymerization method is of great significance in the construction of electrochemical sensors and biosensors due to its practical benefits like modification of the electrode, selectivity, good repeatability, electrochemical recycling, stability and low cost (18,19). To reinforce this, there is much literature on the use of these modified electrodes for qualitatively and quantitatively determining BPA.…”

Section: Introductionmentioning

confidence: 99%

“…PGE has been utilized to identify a broad diversity of analytes using different voltammetric methods (23). PGE has many benefits over other carbon-based electrodes like low cost, surface polishing and no need for timeconsuming processes due to characteristics as disposability (18). The surface may be modified effortlessly, and it has high electrochemical reactivity and surface area (19).…”

Section: Introductionmentioning

confidence: 99%

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Poly(glutamic acid) Modified Pencil Graphite Electrode for Voltammetric Determination of Bisphenol A

Gördük

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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Bisphenol A (BPA), which is an endocrine-disrupting substance, is often utilized as beverage and food packing material, and it may accumulate in nutrition and water sources, which is why it is important to monitor. In this study, for the determination of bisphenol A, electro-polymerization of glutamic acid (GA) was performed on a pencil graphite electrode (PGE). The performance of the sensor (PGA/PGE) for determining bisphenol A was examined utilizing the cyclic voltammetric (CV) and differential pulse voltammetric (DPV) methods. Electrochemical characterization process of the PGA/PGE was carried out by the electrochemical impedance spectroscopy (EIS) and CV methods. The morphological property of the PGA/PGE was investigated by scanning electron microscopy (SEM). The presence of functional groups in the PGA/PGE composition was characterized by Fourier transform infrared spectroscopy (FTIR). The electrochemical behavior of BPA was observed with the bare PGE and the PGA/PGE. Based on the findings, the response of BPA was considerably raised with PGA/PGE. With the optimized parameters and based on the findings from DPV, the BPA oxidation current was linear in a concentration interval of 1.0 to 100 μM (R=0.9992), and the detection limit was found to be 0.37 μM. Detection of BPA in the plastic bottled drinking water sample using PGA/PGE was performed successfully, and the recoveries were in the range of 89.3 to 104.7%. This strategy can provide several prospects in electrochemically determining BPA in practical applications.

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Section: Research Articlementioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Poly(glutamic acid) Modified Pencil Graphite Electrode for Voltammetric Determination of Bisphenol A

Gördük

2021

Journal of the Turkish Chemical Society Section A: Chemistry

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“…Measurements for cyclic voltammetric characterization were performed in 0.1 M KCl solution containing the negatively charged inner sphere redox couple (Fe(CN) 6 4−/3− ) and positively‐charged outer sphere redox probe (Ru(NH 3 ) 6 3+/2+ ) for the electrochemical characterization of TBA + /PGE (Figure 2a and 2b) [40, 41]. Cyclic voltammograms of 2.5 mM Fe(CN) 6 4−/3− obtained with Bare/PGE and TBA + /PGE are shown in Figure 2a.…”

Section: Resultsmentioning

confidence: 99%

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Gördük

2021

Electroanalysis

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In this study, we present a strategy for the specific electrochemical detection of NADH in human blood serums using modified electrode fabricated by intercalation of tetrabutylammonium ions (TBA+) into pencil graphite electrode (TBA+/PGE). In order to implement this protocol, a modification process in the potential range (−0.2) to (−2.75) V was performed in DMSO containing 0.1 M TBAP by CV method. The characterization processes of the prepared sensor were carried out using CV, EIS, FT‐IR, XPS, and SEM methods. The electrode fabricated by intercalation of TBA+ was found to be able to analyze NADH at +0.32 V applied potential by the amperometric method. The LOD was detected as 0.46 μM. The analysis results of human blood serums which are taken from healthy individuals show that TBA+/PGE can be used for real samples. The results indicated that TBA+/PGE can be easily fabricated by one‐step and one‐pot electrochemical method and TBA+/PGE can be used as a potential sensor for the NADH determination.

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“…Nevertheless, these methods are expensive and time-consuming. In general, electrochemical methods have been used as alternatives to detect a large number of important analytes, such as food [10], environmental [11], and pharmaceutical [12,13] components. However, electrochemical methods could be considered promising procedures for the evaluation of RESV properties [14].…”

Section: Scheme 1 Chemical Structure Of Trans-resvmentioning

confidence: 99%

Voltammetric determination of resveratrol using poly(l-phenylalanine)-modified gold electrode

Güngör

Hassine

Burç

et al. 2020

Maced. J. Chem. Chem. Eng.

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In this study, we investigated the electrochemical modification of a gold electrode using poly(L-phenylalanine) and its applicability for the quantification of resveratrol (RESV). The gold electrode was modified with L-phenylalanine employing cyclic voltammetry (CV) in aqueous solution. The detection of RESV with the modified electrode was investigated by square wave voltammetry (SWV) in a phosphate buffer solution (PBS) (pH = 1.2). The analytical calibration curve for RESV showed a linear response with concentration in the oxidation peak current range from 50 to 1000 µM, with a limit of detection (LOD) of 35.16 µM and limit of quantitation (LOQ) of 105.5 µM. The application of the prepared electrochemical sensor was carried out with a standard addition method in red wine samples.

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Electrochemical Determination of Tartrazine Using a Graphene/Poly(L-Phenylalanine) Modified Pencil Graphite Electrode

Cited by 55 publications

References 42 publications

Poly(glutamic acid) Modified Pencil Graphite Electrode for Voltammetric Determination of Bisphenol A

Poly(glutamic acid) Modified Pencil Graphite Electrode for Voltammetric Determination of Bisphenol A

Sensitive Electrochemical Determination of NADH Using an Electrode Fabricated by Intercalation of Tetrabutylammonium Ions Into Graphite Electrode

Voltammetric determination of resveratrol using poly(l-phenylalanine)-modified gold electrode

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