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Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles
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 wit...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7408004/ https://www.ncbi.nlm.nih.gov/pubmed/32629854 http://dx.doi.org/10.3390/nano10071280 |
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author | Torres-Rivero, Karina Pérez-Ràfols, Clara Bastos-Arrieta, Julio Florido, Antonio Martí, Vicenç Serrano, Núria |
author_facet | Torres-Rivero, Karina Pérez-Ràfols, Clara Bastos-Arrieta, Julio Florido, Antonio Martí, Vicenç Serrano, Núria |
author_sort | Torres-Rivero, Karina |
collection | PubMed |
description | 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. |
format | Online Article Text |
id | pubmed-7408004 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-74080042020-08-12 Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles Torres-Rivero, Karina Pérez-Ràfols, Clara Bastos-Arrieta, Julio Florido, Antonio Martí, Vicenç Serrano, Núria Nanomaterials (Basel) Article 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. MDPI 2020-06-30 /pmc/articles/PMC7408004/ /pubmed/32629854 http://dx.doi.org/10.3390/nano10071280 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Torres-Rivero, Karina Pérez-Ràfols, Clara Bastos-Arrieta, Julio Florido, Antonio Martí, Vicenç Serrano, Núria Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title | Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title_full | Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title_fullStr | Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title_full_unstemmed | Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title_short | Direct As(V) Determination Using Screen-Printed Electrodes Modified with Silver Nanoparticles |
title_sort | direct as(v) determination using screen-printed electrodes modified with silver nanoparticles |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7408004/ https://www.ncbi.nlm.nih.gov/pubmed/32629854 http://dx.doi.org/10.3390/nano10071280 |
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