Anodic stripping voltammetric analysis of trace arsenic(III) enhanced by mild hydrogen-evolution at a bimetallic Au–Pt nanoparticle modified glassy carbon electrode

Bu, Lijuan; Liu, Jia; Xie, Qingji; Yao, Shouzhuo

doi:10.1016/j.elecom.2015.06.015

Cited by 50 publications

(14 citation statements)

References 23 publications

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“…Taking advantage of mild hydrogen evolution at a bimetallic Au Pt nanoparticles modified GC electrode, Bu et al were able to determine As(III) in real water samples at nM level [42].…”

Section: Progress Was Achieved In Liverpool Electrochemistry Group Bmentioning

confidence: 99%

Electroanalysis in environmental monitoring: Tracking trace metals—A mini review

Omanović

Garnier

Gibbon-Walsh

et al. 2015

Electrochemistry Communications

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“…Taking advantage of mild hydrogen evolution at a bimetallic Au Pt nanoparticles modified GC electrode, Bu et al were able to determine As(III) in real water samples at nM level [42].…”

Section: Progress Was Achieved In Liverpool Electrochemistry Group Bmentioning

confidence: 99%

Electroanalysis in environmental monitoring: Tracking trace metals—A mini review

Omanović

Garnier

Gibbon-Walsh

et al. 2015

Electrochemistry Communications

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“…In addition, the hydrogen generated during the electrolysis plays the role of reducing agent for As(V) on Au and/or Pt electrodes which could interfere in the subsequent As(III) determination. 54,55 After the electrodeposition, nanostructured surfaces (both types, chronopotentiometrically or CV generated) were characterized by recording cyclic voltammograms. Anodic and cathodic peak currents, obtained in a 100 μM K 4 [Fe(CN) 6 ] solution in 0.1 M PB pH 7.0 (0.1 M KCl) were compared.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Electrogeneration of Gold Nanoparticles on Porous-Carbon Paper-Based Electrodes and Application to Inorganic Arsenic Analysis in White Wines by Chronoamperometric Stripping

et al. 2017

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This paper describes the development of simple, sustainable, and low-cost strategies for signal enhancement on paper-based carbon platforms through gold nanoparticles electrogenerated from small volumes of tetrachloroauric (III) acid solutions. Carbon ink is deposited on a hydrophilic working area of the paper delimited with hydrophobic wax. This maskless procedure is fast and cuts down ink waste. The connection of this working electrode to the potentiostat is ensured with the use of screen-printed electrodes (SPEs). Close contact of the whole area of both carbon electrodes improves the precision of the nanostructuration. Resulting gold-modified paper-based carbon working electrodes (AuNPs-PCWEs) were characterized by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), scanning electron microscopy (SEM), and electron dispersion X-ray spectrometry (SEM/EDX). This methodology was applied for the first time to the inorganic arsenic determination in commercial white wines by chronoamperometric stripping of the electrodeposited As(0). In an optimized system, As(III) was reduced and deposited as As(0) on the nanostructured surface by applying a potential of -0.3 V during 180 s. Then, anodic stripping chronoamperometry was performed at +0.4 V. The analytical signal was the current recorded at 30 s. On the other hand, As(V) was chemically reduced to As(III) with 0.2 M KI, and total determination of arsenic could be carried out. As(V) was determined as the difference between total As and As(III). Then, this fast, simple and low-cost method can be employed for speciation purposes. Limits of detection for As(III) and total arsenic (in the presence of KI) are 2.2 μg L and 2.4 μg L, respectively, and indicate that this method is suitable for regulated quality control.

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“…Sometimes the second anodic As(35) peak is fixed following the first anodic one; it is less sensitive but more specific [25][26][27][28][29]. A second peak could be registered on Pt, Ir, IrO x , or CoO x electrodes due to catalytic processes [30][31][32][33][34][35].…”

Section: As(iii) Determination By Anodic Stripping Voltammetry (Asv)mentioning

confidence: 97%

“…Several works on As(V) determination have been carried out with electrodes modified with reducing agents, including hematite (Fe 2 O 3 ) [121,122] and L-cysteine [123]. It has been suggested that the hydrogen generated during the electrolysis plays the role of reducing agent for As(V) on Au and/or Pt electrodes [28,29].…”

Section: Determination Of As(v)mentioning

confidence: 99%

See 1 more Smart Citation

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

Antonova

Захарова

2016

Electrochemistry Communications

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Anodic stripping voltammetric analysis of trace arsenic(III) enhanced by mild hydrogen-evolution at a bimetallic Au–Pt nanoparticle modified glassy carbon electrode

Cited by 50 publications

References 23 publications

Electroanalysis in environmental monitoring: Tracking trace metals—A mini review

Electroanalysis in environmental monitoring: Tracking trace metals—A mini review

Electrogeneration of Gold Nanoparticles on Porous-Carbon Paper-Based Electrodes and Application to Inorganic Arsenic Analysis in White Wines by Chronoamperometric Stripping

Inorganic arsenic speciation by electroanalysis. From laboratory to field conditions: A mini-review

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