Electroanalysis of Insecticides at Carbon Paste Electrodes with Particular Emphasis on Selected Neonicotinoid Derivatives

Papp, Zsigmond; Švancara, Ivan; Vytřas, Karel

doi:10.5772/29096

Cited by 4 publications

(5 citation statements)

References 120 publications

(133 reference statements)

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“…Compared to these techniques modern voltammetric methods—in combination with a large variety of electrodes and other detection systems [ 17 , 18 ]—are usually simpler, inexpensive, rapid, as well as sufficiently sensitive and selective to be employed for a large-scale monitoring of electrochemically active environmental pollutants [ 17 ]. Among the electrodes of choice, the so-called carbon paste electrodes (CPEs [ 19 – 22 ]) offer a number of advantageous features; namely, simple preparation (often in labs in a wide palette of various configurations, including very special mixtures), minimal cost, favorable signal-to-noise characteristics (in both faradic and non-faradic measurements), unique surface characteristics, and mainly, almost unlimited possibilities for chemical and biological modification [ 21 , 23 – 25 ]. When one considers also their enviromentally friendly character, wide adaptability to the latest trends, or a full compatibility with miniaturised detection systems and modern technologies, it is not so surprising that these electrodes are so frequently employed in analysis of pesticides and related substances (see [ 22 ] and refs.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of the Herbicide Linuron Using a Tricresyl Phosphate-Based Carbon Paste Electrode

Đorđević

Papp

Švancara

et al. 2011

Sensors

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This paper summarises the results of voltammetric studies on the herbicide 3-(3,4-dichlorophenyl)-1-methoxy-1-methylurea (Linuron), using a carbon paste electrode containing tricresyl phosphate (TCP-CPE) as liquid binder. The principal experimental conditions, such as the pH effect, investigated in Britton-Robinson buffer solutions (pH 2.0–7.0), the peak characteristics for the analyte of interest, or instrumental parameters for the differential pulse voltammetric mode were optimized for the method. As found out, the best electroanalytical performance of the TCP-CPE was achieved at pH 2.0, whereby the oxidation peak of Linuron appeared at ca. +1.3 V vs. SCE. The analytical procedure developed offers good linearity in the concentration range of 1.25–44.20 μg mL−1 (1.77 × 10−4–5.05 × 10−6 mol L−1), showing—for the first time—the applicability of the TCP-CPE for anodic oxidations in direct voltammetry (without accumulation). The method was then verified by determining Linuron in a spiked river water sample and a commercial formulation and the results obtained agreed well with those obtained by the reference HPLC/UV determination.

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Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of the Herbicide Linuron Using a Tricresyl Phosphate-Based Carbon Paste Electrode

Đorđević

Papp

Švancara

et al. 2011

Sensors

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“…discussion in ref. 29 or the already proposed procedures for monitoring some pesticides having demonstrated pretty well such a feasibility. 44,45 Fig.…”

Section: Discussionmentioning

confidence: 94%

“…Also electrochemical methods with typically inexpensive instrumentation are potentially applicable to the determination of various pesticides, 29,30 offering a very good analytical performance in relatively simple procedures and usually without derivatisation step(s) incorporated in some chromatographic detections (see e.g. ref.…”

Section: Introductionmentioning

confidence: 99%

Determination of methiocarb pesticide using differential pulse voltammetry with a boron-doped diamond electrode

et al. 2015

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In this article, a simple and rapid method is described for voltammetric determination of methiocarb (MTC, a pesticide of the carbamate type). Direct oxidation of MTC at a highly positive potential of about +1.4 V vs.Ag/AgCl was found to be feasible, thanks to the excellent performance of the working boron-doped diamond electrode in combination with the differential pulse voltammetric ramp. After optimisation of important parameters, the signal of MTC could be calibrated in an interval of 1-55 mg mL À1 MTC, when offering a detection limit (3s) of ca. 0.15 mg mL À1 MTC. The practical applicability of the method has been demonstrated on analyses of a commercial pesticide, either with respect to the total content of MTC or as its gradual and time-controlled dissolution in the model sample of the natural aquatic system.Scheme 1 Methiocarb (MTC).

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“…However, there are few developing countries including Malaysia, Brazil, South Africa Uruguay and Argentina that maintain pesticide usage (Halimatunsadiah et al, 2016). Although the use of pesticides gives a lot of advantages in agriculture, they also have negative impact on human health and environment (Guzsvany et al, 2011). Imidacloprid (IMI) has become the most widely used insecticide for pest control on crops since its discovery and utilization.…”

Section: Introductionmentioning

confidence: 99%

Modified Screen-Printed Electrode for Determination of Imidacloprid in Water Samples: A Preliminary Study

Ahmad

Zainordin

Jaafar

2019

UMT JUR

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A preliminary assessment of a simple and rapid electrochemical method was carried out to analyse imidacloprid (IMI) in water samples using cyclic voltammetry (CV) based on modified screen-printed gold electrode (SPGE). Self-assembled monolayer (SAM) was optimized using 11-mercaptoundecanoic acid (11-MUA) with several parameters such as scan rates, type of supporting electrolyte, and pH of the supporting electrolyte. The modified SPGE showed high suppressed current against the potential due to the formation of a monolayer on the electrode surface. Surface morphology of the electrode was analysed using Scanning Electron Microscopy (SEM) confirming that 11-MUA was present on the modified SPGE. The water samples were collected from GM Peladang, Kuala Terengganu and two locations at Universiti Malaysia Terengganu. Method detection limit was expressed as limit of detection (LOD) and limit of quantification (LOQ) for modified SPGE which were calculated at 3.784 and 12.613 mg/L in water samples, respectively. This study showed that the reduction peak current observed on the modified electrode was lower compared with oxidation peak current. Hence, gold is unsuitable for IMI detection.

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Electroanalysis of Insecticides at Carbon Paste Electrodes with Particular Emphasis on Selected Neonicotinoid Derivatives

Cited by 4 publications

References 120 publications

Voltammetric Determination of the Herbicide Linuron Using a Tricresyl Phosphate-Based Carbon Paste Electrode

Voltammetric Determination of the Herbicide Linuron Using a Tricresyl Phosphate-Based Carbon Paste Electrode

Determination of methiocarb pesticide using differential pulse voltammetry with a boron-doped diamond electrode

Modified Screen-Printed Electrode for Determination of Imidacloprid in Water Samples: A Preliminary Study

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