Electrochemical determination of carbendazim in grapes and their derivatives by an ionic liquid-modified carbon paste electrode

Macedo, José Fernando de; Alves, Anderson Luís; Sant’Anna, Mércia Vieira da Silva; Cunha, F.; Oliveira, Gerlon de Almeida Ribeiro; Lião, Luciano M.; Sussuchi, Eliana Midori

doi:10.1007/s10800-021-01665-8

Cited by 14 publications

(3 citation statements)

References 43 publications

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“…According to the results, the oxidation peak current gradually increased from a pH value of 4.0 to 7.0, indicating the electrochemical process of CBZ involves protons [31]. The electrochemical oxidation mechanism of CBZ is depicted in Figure S3 [32]. The fluctuation in pH affects the concentration of protons, which, in turn, influences current response.…”

Section: Electrochemical Behaviour Of Cbz At Bare and Modified Electr...mentioning

confidence: 92%

Facile Synthesis of Platinum Nanoparticle-Embedded Reduced Graphene Oxide for the Detection of Carbendazim

Pushparajah,

Hasegawa,

Pham

et al. 2023

Materials

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In recent years, there has been a significant interest in the advancement of electrochemical sensing platforms to detect pesticides with high sensitivity and selectivity. Current research presents a novel approach utilising platinum nanoparticles (NPs) and reduced graphene oxide deposited on a glassy carbon electrode (Pt-rGO/GCE) for direct electrochemical measurement of carbendazim (CBZ). A straightforward one-step electrodeposition process was applied to prepare the Pt-rGO sensing platform. The incorporation of conductive rGO nanosheets along with distinctive structured Pt NPs significantly enhanced the effective electrode surface area and electron transfer of CBZ. Additionally, when exposed to 50 µM CBZ, Pt-rGO/GCE exhibited a higher current response compared to the bare electrode. Further investigations were performed to analyse and optimise the experimental parameters that could influence pesticide detection. Under the optimised conditions of pH 7 and 5 min of accumulation time, the Pt-rGO/GCE sensor showed a linear concentration detection range from 0.1 µM to 50 µM, with a detection limit of 3.46 nM. The fabricated sensor was successfully employed for CBZ detection in milk and tap water with 98.88% and 98.57% recovery, respectively. The fabricated sensor showed higher sensitivity and reproducibility, thus indicating the potential of this technology in the development of reliable sensors for the detection of CBZ or similar pesticides in forthcoming applications.

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Section: Electrochemical Behaviour Of Cbz At Bare and Modified Electr...mentioning

confidence: 92%

Facile Synthesis of Platinum Nanoparticle-Embedded Reduced Graphene Oxide for the Detection of Carbendazim

Pushparajah,

Hasegawa,

Pham

et al. 2023

Materials

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“…The determination of estrone using a simple, fast, and efficient method is of great interest because of the many problems it can cause [3]. In this way, the determination of estrone through electrochemical methods becomes a promising alternative because they are simple operation methods [9,10], which have low limits of detection and quantification, not to mention that this technique reduces the production of potentially harmful substances considerably [6,11].…”

Section: Introductionmentioning

confidence: 99%

Development of a selective graphene quantum dots based electrochemical sensor for the determination of estrone in different water matrices and synthetic urine

et al. 2023

Self Cite

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Estrone (E1) is associated with various health and environmental issues, necessitating the development of analytical methods for monitoring E1 in different matrices. In this context, the present study reports the development of a graphene quantum dot‐based electrode (GQD/E) to detect estrone in water and urine samples. Voltammetric measurements under optimized conditions demonstrated the feasibility of using GQD/E to detect estrone at trace levels in aqueous samples. Two linear dynamic ranges were obtained at concentrations from 0.05 to 10.00 μmol L−1, with limit of detection (LOD) and quantification (LOQ) of 28.0 and 96.0 nmol L−1, respectively. Furthermore, the LOD value obtained in this study is one of the lowest ever reported in the literature for the electrochemical determination of E1. The method response showed no significant variation in the current intensity of E1 in the presence of the 16 interferents. The recovery values obtained by using GQD/E to quantify estrone in fortified samples of seawater, tap water, wastewater and synthetic urine ranged from 95.9 to 108.1 %, indicating that the method presents highly sensitive for detecting estrone in aqueous matrices.

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“…of CBZ in apple is <5 mg/kg [5], and the EU stipulates that the MRL is <2 mg/kg [6]. The existing detection methods of CBZ include high performance liquid chromatography (HPLC) [7], liquid chromatography-tandem mass spectrometry (LC-MS/MS) [8], electrochemistry [9], immunosensor [10] and so on. Lee et al used QuEChERS and LC-MS/MS to simultaneously detect the concentrations of thiophanatemethyl and CBZ in pears.…”

Section: Introductionmentioning

confidence: 99%

An Improved POD Model for Fast Semi-Quantitative Analysis of Carbendazim in Fruit by Surface Enhanced Raman Spectroscopy

Yang

Lin

et al. 2022

Molecules

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The current detection method of carbendazim suffers from the disadvantages of complicated preprocessing and long cycle time. In order to solve the problem of rapid quantitative screening of finite contaminants, this article proposed a qualitative method based on characteristic peaks and a semi-quantitative method based on threshold to detect carbendazim in apple, and finally the method is evaluated by a validation system based on binary output. The results showed that the detection limit for carbendazim was 0.5 mg/kg, and the detection probability was 100% when the concentration was no less than 1 mg/kg. The semi-quantitative analysis method had a false positive rate of 0% and 5% at 0.5 mg/kg and 2.5 mg/kg, respectively. The results of method evaluation showed that when the added concentration was greater than 2.5 mg/kg, the qualitative detection method was consistent with the reference method. When the concentration was no less than 5 mg/kg, the semi-quantitative method is consistent between different labs. The semi-quantitative method proposed in this study can achieve the screening of finite contaminants in blind samples and simplify the test validation process through the detection probability model, which can meet the needs of rapid on-site detection and has a good application prospect.

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Electrochemical determination of carbendazim in grapes and their derivatives by an ionic liquid-modified carbon paste electrode

Cited by 14 publications

References 43 publications

Facile Synthesis of Platinum Nanoparticle-Embedded Reduced Graphene Oxide for the Detection of Carbendazim

Facile Synthesis of Platinum Nanoparticle-Embedded Reduced Graphene Oxide for the Detection of Carbendazim

Development of a selective graphene quantum dots based electrochemical sensor for the determination of estrone in different water matrices and synthetic urine

An Improved POD Model for Fast Semi-Quantitative Analysis of Carbendazim in Fruit by Surface Enhanced Raman Spectroscopy

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