Electrocatalytic determination of ascorbic acid using a green synthesised magnetite nano-flake modified carbon paste electrode by cyclic voltammetric method

Rajendrachari, Shashanka; Jayaprakash, Gururaj Kudur; B.G, Prakashaiah; Kumar, Mohan; Swamy, B.E. Kumara

doi:10.1080/14328917.2021.1945795

Cited by 63 publications

(39 citation statements)

References 38 publications

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“…Again, to confirm this, the plot of log I pa versus log ν (Figure c) was displayed with linearity with the LR equation of log I pa = −4.9 + 0.49 log ν. The slope 0.49 is nearer to 0.5, confirming that the reaction was diffusion-controlled at the superficial layer of the electrode. − …”

Section: Resultsmentioning

confidence: 70%

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Highly Selective and Sensitive Voltammetric Method for the Detection of Catechol in Tea and Water Samples Using Poly(gibberellic acid)-Modified Carbon Paste Electrode

et al. 2022

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Despite the wide range of applications of catechol (CC) in agrochemical, petrochemical, textile, cosmetics, and pharmaceutical industries, its exposure to the environment leads to health issues as it is carcinogenic. This increased the concern over the risk of exposure level of CC in the environment, and monitoring its level has become critical. In this work, we report the fabrication of poly-gibberellic acid-modified carbon paste electrode (PGBAMCPE) to be a simple, viable, and effective electrochemical electrode for the determination of CC. This was synthesized by a simple electropolymerization method by the cyclic voltammetry (CV) technique. The electrodes were characterized by field emission electron microscopy, energy-dispersive X-ray spectroscopy, and electrochemical impedance spectroscopy. Compared to the bare carbon paste electrode, the sensitivity for CC fortified at PGBAMCPE in both CV and differential pulse voltammetry (DPV). We succeeded attaining a lower detection limit of 0.57 μM by the DPV method. The developed electrode was observed to be highly conductive, transducing, stable, and reproducible and was highly selective with anti-interfering properties from the determination of CC with hydroquinone simultaneously. The applicability of the electrode was confirmed from the detection CC in tea and water samples with good recoveries. This substantiates that PGBAMCPE is promising and consistent for the rapid monitoring of CC-contaminated area and clinical diagnosis.

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Section: Resultsmentioning

confidence: 70%

“…The slope 0.49 is nearer to 0.5, confirming that the reaction was diffusion-controlled at the superficial layer of the electrode. 23 − 28…”

Section: Resultsmentioning

confidence: 99%

Highly Selective and Sensitive Voltammetric Method for the Detection of Catechol in Tea and Water Samples Using Poly(gibberellic acid)-Modified Carbon Paste Electrode

et al. 2022

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“…Then, the graphite paste was filled into a 3 mm hole Teflon tube. The electrode surface was wiped smoothly on the butter paper for a clean, consistent, and even surface [13][14][15].…”

Section: Preparation Of Bare Carbon Paste Electrode (Bcpe)mentioning

confidence: 99%

“…Due to their low cost relative to other materials, CPEs are becoming more widely used in fields such as pharmaceutical, biological, and environmental investigations. Physical or chemical treatments can improve electrochemical characteristics of CPE such as adsorption capacity, selectivity, and sensitivity [15]. To create a novel sensor with appropriate electrochemical characteristics, a CPE matrix must be modified.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and electrochemical analysis of L-serine modified graphite paste electrode for dopamine sensing applications in real samples

Kumar¹,

Jayaprakash²,

Manjappa³

et al. 2022

J. Electrochem. Sci. Eng.

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In this study, we used the grinding modification approach to modify the carbon paste electrode (CPE) from an environmentally friendly catalyst (L-serine). L-serine(L-s) is shown to be an effective electrocatalytic at the modified CPE (MCPE) interface for detecting dopamine (DA). L-sMCPE showed excellent activity to detect DA in commercial injection samples with a recovery range of 98.9 to 100.5%. Theoretical studies were used to understand the electrocatalysis of L-serine at the atomic level using frontier molecular orbitals and analytical Fukui assay. The amine group of L-serine works as an extra oxidation site (cause for enhanced reduction peak DA) and a carboxylic acid group (reason for enhanced oxidation peak DA) at the L-sMCPE interface, according to our theoretical findings. Improvements to these processes might have a big influence on knowledge of the electrode interface for sensing applications.

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“…Therefore, we need some standard analytical methods to detect the presence of heavy metal ions in foods, plants, animals, water, and soils. Electrochemical methods like cyclic voltammetry [9][10][11][12][13][14][15][16], stripping voltammetry, [4]. differential pulse voltammetry, and polarography are so far best and popular choice to determine the various heavy metals in the environment.…”

Section: Introductionmentioning

confidence: 99%

A Review on Cyclic Voltammetric Investigation of Toxic Heavy Metals

Rajendrachari¹,

Kiran²,

Mahale³

et al. 2023

Frontiers in Voltammetry

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Heavy metals are one of the toxic pollutants threatening the human kind by causing various health issues. The detection of such polutants are of important environmental concern and we need a real-time monitoring equipment. Many researchers have established a number of approaches for the detection of these heavy metals so far. But, the development of one time use sensors for the quick, and real time detection of toxic heavy metals is in great demand. The electrochemical methods like cyclic voltammetry, is proved to be one of the best and popular methods, and are preferred over other electrochemical methods because of its high sensitivity, selectivity, anti-fouling, quick and accurate detection. In the present book chapter, we will discuss the various modifiers used to detect the arsenic, cadmium, and lead heavy metals using cyclic voltammetry.

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Electrocatalytic determination of ascorbic acid using a green synthesised magnetite nano-flake modified carbon paste electrode by cyclic voltammetric method

Cited by 63 publications

References 38 publications

Highly Selective and Sensitive Voltammetric Method for the Detection of Catechol in Tea and Water Samples Using Poly(gibberellic acid)-Modified Carbon Paste Electrode

Highly Selective and Sensitive Voltammetric Method for the Detection of Catechol in Tea and Water Samples Using Poly(gibberellic acid)-Modified Carbon Paste Electrode

Theoretical and electrochemical analysis of L-serine modified graphite paste electrode for dopamine sensing applications in real samples

A Review on Cyclic Voltammetric Investigation of Toxic Heavy Metals

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