| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Rees, Neil
University of Birmingham
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2022Electrochemical metal recyclingcitations
- 2021Magnetically modified electrocatalysts for oxygen evolution reaction in proton exchange membrane (PEM) water electrolyzerscitations
- 2020Cisplatin adducts of DNA as precursors for nanostructured catalyst materialscitations
- 2016Enhancement of the hydrogen evolution reaction from Ni-MoS2 hybrid nanoclusterscitations
- 2015Investigating electrodes for intermediate temperature polymer electrolyte fuel cell (IT-PEFC)
- 2015Hydrogen selective membranescitations
- 2014Gas diffusion layer materials and their effect on polymer electrolyte fuel cell performance - Ex situ and in situ characterizationcitations
- 2013Gold microelectrode ensemblescitations
- 2011Electrode-nanoparticle collisionscitations
- 2011Nanoparticle-electrode collision processescitations
Places of action
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article
Gold microelectrode ensembles
Abstract
<p>The determination of total arsenic through As(V) anodic stripping voltammetry (ASV) is, in some cases, preferable over As(III) ASV. The As(V) ASV procedure has no chemical reduction step from As(V) into As(III), which results in decreased analysis time and no contamination from reducting reagents. A simple and reliable procedure of As(V) determination is proposed. Anodic stripping determination of trace As(V) at gold microelectrode ensembles in diluted HCl solution in the presence of dissolved oxygen is shown. The electrode is based on a carbon black (30%)-polyethylene composite. The sensor was prepared by gold electrodeposition on the surface of the composite electrode. The given sensor is cheap, reliable and stable, especially when electrochemical activation is employed. The experimental parameters for the electrochemical determination were optimized, namely 0.005M HCl as the background electrolyte, the deposition potential -2.2V (versus Ag/AgCl in 1M KCl) and 180mVs<sup>-1</sup> linear scan rate. Calibration curves were obtained and were linear in [As(V)] over the 1.5-45 μgL<sup>-1</sup> range, with a LOD of 0.5 μgL<sup>-1</sup>. The effect of common interfering species is studied. The electrochemical behaviour of As(III) form is studied in the same experimental conditions. It was found that As(III) is deposited at lower potentials (starting at -0.6 V) and the sensitivity of As(III) detection is higher, but dependant on the presence of dissolved oxygen. The speciation of inorganic forms of arsenic is discussed.</p>