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Título : Determination of halides using Ag nanoparticles-modified disposable electrodes. A first approach to a wearable sensor for quantification of chloride ions
Autor : Bujes Garrido, J.
Izquierdo Bote, Daniel
Heras, Aránzazu
Colina, Álvaro
Arcos Martínez, Julia
Publicado en: Analytica Chimica Acta. 2018, V. 1012, p. 42-48
Editorial : Elsevier
Fecha de publicación : jul-2018
Fecha de disponibilidad: jul-2020
ISSN : 0003-2670
DOI: 10.1016/j.aca.2018.01.063
Resumen : This work reports a simple voltammetric method for the determination of chloride, bromide, and iodide ions using screen-printed carbon electrodes modified with silver nanoparticles electrochemically deposited on the working electrode surface. UV/Vis absorption spectroelectrochemistry was used to study the electrodeposition of silver nanoparticles on the working carbon electrode on PET or Gore-Tex® supports, and their subsequent oxidation in the presence of halide ions. The main figures of merit of the developed sensors, such as reproducibility and detection limit, have been calculated. Reproducibility values of 2.22%, 2.83% and 3.23% were obtained for chloride, bromide and iodide determinations, respectively. Additionally, the lowest detected amount of chloride, bromide and iodide ions were 3.0·10−6 M, 5.0·10−6 M and 5.0·10−6 M, respectively. Taking into account the relevance of the determination of chloride ion concentration in sweat, the voltammetric method for the determination of halides has been successfully transferred to a Gore-Tex® support to build a first approach to a wearable sensor that facilitates the quantification of this ion in sweat samples. The Gore-Tex® sensor provides a good reproducibility (RSD = 1.61%).
Palabras clave: Halide ions electrochemical determination
Wearable screen-printed sensors
UV/Vis absorptometric spectroelectrochemistry
Silver nanoparticles
Sweat analysis
URI : http://hdl.handle.net/10259/4780
Versión del editor: https://doi.org/10.1016/j.aca.2018.01.063
Aparece en las colecciones: Artículos ELAN
Artículos GAIN

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