2024-03-29T07:50:22Zhttps://riubu.ubu.es/oai/requestoai:riubu.ubu.es:10259/43802022-04-29T12:02:47Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377
Repositorio Institucional de la Universidad de Burgos
author
Barquero Quirós, Miriam
author
Domínguez Renedo, Olga
author
Alonso Lomillo, Mª Asunción
author
Arcos Martínez, Julia
2017-03-20T08:50:47Z
2017-03-20T08:50:47Z
2014-05
http://hdl.handle.net/10259/4380
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.
eng
Attribution 3.0 Unported
acetylcholinesterase
biosensor
aluminum
acetylthiocholine iodide
screen-printed electrodes
gold nanoparticles
Acetylcholinesterase Inhibition-Based Biosensor for Aluminum(III) Chronoamperometric Determination in Aqueous Media
info:eu-repo/semantics/article
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URL
https://riubu.ubu.es/bitstream/10259/4380/1/Barquero-Sensors_2014.pdf
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https://riubu.ubu.es/bitstream/10259/4380/6/Barquero-Sensors_2014.pdf.txt
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Barquero-Sensors_2014.pdf.txt