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Open AccessArticle

Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Manoparticles

1
Departament d’Enginyeria Química, Escola d’Enginyeria de Barcelona Est (EEBE), Universitat Politècnica de Catalunya, BarcelonaTEch (UPC), Av. Eduard Maristany 16, 08019 Barcelona, Spain
2
Barcelona Research Center for Multiscale Science and Engineering, Av. Eduard Maristany 16, 08019 Barcelona, Spain
3
Departament d’Enginyeria Química i Química Analítica, Facultat de Química, Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
4
Physical Chemistry, Technische Universität Dresden, Zellescher Weg 19, 01069 Dresden, Germany
5
Fundació CTM Centre Tecnològic de Manresa, Plaça de la Ciència 2, 08243 Manresa, Spain
6
Institut de Recerca de l’Aigua (IdRA), Universitat de Barcelona, Martí i Franquès 1-11, 08028 Barcelona, Spain
*
Authors to whom correspondence should be addressed.
Nanomaterials 2020, 10(7), 1280; https://doi.org/10.3390/nano10071280
Received: 30 May 2020 / Revised: 17 June 2020 / Accepted: 25 June 2020 / Published: 30 June 2020
(This article belongs to the Special Issue Surface Modifications of Carbon Nanomaterials)
Carbon-nanofiber-based screen-printed electrodes modified with silver nanoparticles (Ag-NP-SPCNFEs) were tested in a pioneering manner for the direct determination of As(V) at low μg L−1 levels by means of differential pulse anodic stripping voltammetry. Screen-printed electrodes were modified with two different types of Ag-NPs, nanoseeds (NS), and nanoprisms (NPr) and characterized both microscopically and electrochemically. Furthermore, after optimizing the direct voltammetric determination of As(V), the analytical performance of considered sensors was compared for the direct determination of As(V). These results suggest that Ag-NS offer a better analytical response compared to Ag-NPr, with a detection and quantification limit of 0.6 and 1.9 µg L−1, respectively. The proposed methodology was validated using a spiked tap water sample with a very high reproducibility and good agreement with inductively coupled plasma - mass spectrometry (ICP-MS) measurements. View Full-Text
Keywords: arsenic determination; silver nanoparticles; anodic stripping voltammetry; screen-printed electrodes; water analysis arsenic determination; silver nanoparticles; anodic stripping voltammetry; screen-printed electrodes; water analysis
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MDPI and ACS Style

Torres-Rivero, K.; Pérez-Ràfols, C.; Bastos-Arrieta, J.; Florido, A.; Martí, V.; Serrano, N. Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Manoparticles. Nanomaterials 2020, 10, 1280.

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