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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/5347

    Título
    Development of a selective chloride sensing platform using a screen-printed platinum electrode
    Autor
    Cunha Silva, Hugountranslated
    Arcos Martínez, Juliauntranslated Orcid
    Publicado en
    Talanta. 2019, V. 195, p. 771-777
    Editorial
    Elsevier
    Fecha de publicación
    2019-04
    ISSN
    0039-9140
    DOI
    10.1016/j.talanta.2018.12.008
    Abstract
    A new and selective voltammetric method for chloride determination is proposed, based on platinum and chloride interactions. A screen-printed platinum electrode (SPPtE) functions as a sensing platform, which promotes the formation of chloro-adsorbed species on the electrode surface, acting as an effective means of anion-determination in several matrices. The pretreatment of the SPPtE and careful control of the cathodic stripping voltammetric parameters yielded a well-defined electrochemical signal. This cathodic peak was due to the adsorption of chlorine, which had previously been oxidized from chloride anions in the initial anodic deposition step. It offers a simple, low-cost, fast, reproducible (RSD < 6%) and precise method for selective chloride determination, with limit of detection of 0.76 mM, and a sensitivity of − 24.147 µA mM −1 for a broad determination range of up to 150 mM. Chloride determination was correctly performed with single drops of environmental, pharmaceutical and food samples. In addition, the sensor was successfully adapted as a flexible screen-printed platinum electrode sensor using Gore-Tex® as support for printing.
    Palabras clave
    Chloride
    Platinum electrode surface
    Cathodic stripping voltammetry
    Screen-printed electrode
    Flexible sensor
    Materia
    Química analítica
    Chemistry, Analytic
    URI
    http://hdl.handle.net/10259/5347
    Versión del editor
    https://doi.org/10.1016/j.talanta.2018.12.008
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    Attribution-NonCommercial-NoDerivatives 4.0 Internacional
    Documento(s) sujeto(s) a una licencia Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 Internacional
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    Cunha-talanta_2019.pdfEmbargado hasta: 2021-04-01
    Tamaño:
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    Formato:
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