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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/4380

    Título
    Acetylcholinesterase Inhibition-Based Biosensor for Aluminum(III) Chronoamperometric Determination in Aqueous Media
    Artículo
    Autor
    Barquero Quirós, Miriam
    Domínguez Renedo, OlgaUBU authority
    Alonso Lomillo, Mª AsunciónUBU authority
    Arcos Martínez, JuliaUBU authority Orcid
    Publicado en
    Sensors, 2014, V. 14, n. 5, p. 8203-8216
    Editorial
    MDPI
    Fecha de publicación
    2014-05
    Abstract
    A novel amperometric biosensor for the determination of Al(III) based on the inhibition of the enzyme acetylcholinesterase has been developed. The immobilization of the enzyme was performed on screen-printed carbon electrodes modified with gold nanoparticles. The oxidation signal of acetylthiocholine iodide enzyme substrate was affected by the presence of Al(III) ions leading to a decrease in the amperometric current. The developed system has a detection limit of 2.1 ± 0.1 μM for Al(III). The reproducibility of the method is 8.1% (n = 4). Main interferences include Mo(VI), W(VI) and Hg(II) ions. The developed method was successfully applied to the determination of Al(III) in spiked tap water . The analysis of a certified standard reference material was also carried out. Both results agree with the certified values considering the respective associated uncertainties.
    Palabras clave
    acetylcholinesterase
    biosensor
    aluminum
    acetylthiocholine iodide
    screen-printed electrodes
    gold nanoparticles
    URI
    http://hdl.handle.net/10259/4380
    Versión del editor
    http://dx.doi.org/10.3390/s140508203
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    • Artículos ELAN
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