Electrochemical determination of picoxystrobin on boron-doped diamond electrode: Square-wave voltammetry versus BIA-multiple pulse amperometry

Dornellas, Rafael M.; Muñoz, Rodrigo A.A.; Aucélio, Ricardo Q.

doi:10.1016/j.microc.2015.05.010

Cited by 26 publications

(10 citation statements)

References 24 publications

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“…The method provided good analytical characteristics, such as linear range of 40–650 μM, detection limit 0.5 μM and analytical frequency of 90 injections h −1 . In other work, picoxystrobin was determined in natural water using a BIA with amperometric detection (Dornellas et al, 2015). The limit of detection and analytical frequency were 1.6 μM and 108 injections h −1 , respectively.…”

Section: Bdd Electrode Coupled To Bia Systemsmentioning

confidence: 99%

Boron Doped Diamond Electrodes in Flow-Based Systems

et al. 2019

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Boron-doped diamond (BDD) electrodes present several notable properties, such as the largest potential window of all electrode materials (especially in anodic potentials), low background and capacitive currents, reduced fouling compared to other electrodes, mechanical robustness, and good stability over time. On the other hand, flow-based systems are known as well-established approaches to minimize reagent consumption and waste generation and with good compromise between sample throughput and analytical performance (mechanization of chemical assays). This review focuses on the use of BDD electrodes for electrochemical detection in flow systems, such as flow injection analysis (FIA), batch injection analysis (BIA), high performance liquid chromatography (HPLC), and capillary electrophoresis (CE). The discussion deals with the historical evolution of BDD, types of electrochemical pre-treatments (cathodically/H-terminated or anodically/O-terminated), cell configurations, and analytical performance. Articles are discussed in chronological order and subdivided according to the type of flow system: FIA, BIA, HPLC, and CE.

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Section: Bdd Electrode Coupled To Bia Systemsmentioning

confidence: 99%

Boron Doped Diamond Electrodes in Flow-Based Systems

et al. 2019

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“…In addition, application of new electrode materials provides improvement on sensitivity and selectivity, resulting in unique advantages for such analytical systems [6]. Glassy carbon electrodes (GCEs) [7][8][9][10][11] and boron-doped diamond electrodes (BDDEs) [12][13][14][15][16][17][18][19] were mostly used electrode materials in BIA for the determination and quantification of many compounds. Other carbon-based electrodes, such as graphite-composite electrode [20], GCE modified with multi-walled carbon nanotubes [21,22] or coated with a mercury thin film [23], as well as some metal electrodes, such as gold [24] or copper ones [25], were also successfully tested and applied.…”

Section: Introductionmentioning

confidence: 99%

Batch Injection Analysis with Amperometric Detection for DNA Biosensing Applications

2019

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In this work, batch injection analysis with the amperometric detection (BIA‐AD), employing a detection cell designed to adapt a screen‐printed carbon electrode (SPCE) was used for the first time as a robust electroanalytical system for DNA biosensing applications. The sensitive amperometric detection was used to evaluate the structural changes in double‐stranded DNA (dsDNA) after UV‐C irradiation of its solution for a given time. Batching of DNA samples was performed by precise electronic pipette microinjection of an irradiated sample aliquot onto the unmodified activated SPCE surface incorporated in the BIA‐AD system. Using the optimized experimental conditions (40 μL of 1 mg mL−1 dsDNA in a 0.1 M phosphate buffer of pH 7.4 sampled at the injection speed degree of 6 and detected at the potential of +1.5 V vs silver pseudo‐reference electrode), a time‐dependent response (gradual decrease of amperometric signal up to 58 % after 10 min of the irradiation) was found for the detection of damage to low molecular weight salmon sperm dsDNA. The advantages of this low‐dimensional and cost‐effective measuring system can be utilized not only for the quantification of DNA damage/degradation by UV irradiation, but they are also promising for studying other types of DNA interactions.

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“…A promising carbon based electrode is boron doped diamond because of its stability, chemical inertness, low levels of electrochemical background noise and wide potential window in aqueous solutions. [10] Boron doped diamond electrodes (BDDEs) have been demonstrated in many chemical sensing applications [10][11][12][13][14][15][16][17][18], and can be futher used in the synthesis of several oxidizing agents like H2O2, H2SO4 and O3. [19,20] However, the bare diamond electrode shows a poor electrochemical response to H2O2.…”

Section: Introductionmentioning

confidence: 99%