2026-04-28T18:32:01Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/43782022-04-29T12:02:47Zcom_10259_4376com_10259_5086com_10259_2604col_10259_4377

Barquero Quirós, Miriam b67ae431-a32e-4d35-a48b-d80c8b11666c 500 Arcos Martínez, Julia 36 500 0000-0002-4932-6445 2017-03-17T12:21:52Z 2017-03-17T12:21:52Z 2016-10 1424-8220 http://hdl.handle.net/10259/4378 A novel amperometric biosensor for the determination of Al(III) based on the inhibition of the enzyme superoxide dismutase has been developed. The oxidation signal of epinephrine substrate was affected by the presence of Al(III) ions leading to a decrease in its amperometric current. The immobilization of the enzyme was performed with glutaraldehyde on screen-printed carbon electrodes modifiedwith tetrathiofulvalene (TTF) and different types ofnanoparticles. Nanoparticles of gold, platinum, rhodium and palladium were deposited on screen printed carbon electrodes by means of two electrochemical procedures. Nanoparticles were characterized trough scanning electronic microscopy, X-rays fluorescence, and atomic force microscopy. Palladium nanoparticles showed lower atomic force microscopy parameters and higher slope of aluminum calibration curves and were selected to perform sensor validation. The developed biosensor has a detection limit of 2.0 0.2 Mfor Al(III), with a reproducibility of 7.9% (n = 5). Recovery of standard reference material spiked to buffer solution was 103.8% with a relative standard deviation of 4.8% (n = 5). Recovery of tap water spiked with the standard reference material was 100.5 with a relative standard deviation of 3.4% (n = 3). The study of interfering ions has also been carried out. Vice-presidency for Research at the University of Costa Rica (Project 804-B5-117), Ministerio de Ciencia e Innovación (MICINN Spain) and Fondo Europeo de Desarrollo Regional (FEDER) (Projects :TEC-TEC20013-40561-P and MUSSEL RTC-2015-4077-2). application/pdf eng MDPI Sensors, 2016, V. 16, n. 10, art. 1588 http://dx.doi.org/10.3390/s16101588 Attribution 4.0 International http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess superoxide dismutase biosensor aluminum tetrathiofulvalene screen-printed electrodes nanoparticles Chemistry, Analytic Química analítica Effect of Nanoparticles on Modified Screen Printed Inhibition Superoxide Dismutase Electrodes for Aluminum info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion CC-LICENSE license_rdf license_rdf application/rdf+xml; charset=utf-8 908 https://riubu.ubu.es/bitstream/10259/4378/11/license_rdf 0175ea4a2d4caec4bbcc37e300941108 MD5 11 THUMBNAIL Barquero-Sensors_2016.pdf.jpg Barquero-Sensors_2016.pdf.jpg IM Thumbnail image/jpeg 3224 https://riubu.ubu.es/bitstream/10259/4378/10/Barquero-Sensors_2016.pdf.jpg 63138213eb4dd7ef389343c196a8fbb5 MD5 10 ORIGINAL Barquero-Sensors_2016.pdf Barquero-Sensors_2016.pdf application/pdf 2494149 https://riubu.ubu.es/bitstream/10259/4378/4/Barquero-Sensors_2016.pdf 8f3c2331aa95836116c02e12178318c4 MD5 4 LICENSE license.txt license.txt text/plain; charset=utf-8 998 https://riubu.ubu.es/bitstream/10259/4378/8/license.txt aa90105e1c90a1b4fe810649aa967b7d MD5 8 TEXT Barquero-Sensors_2016.pdf.txt Barquero-Sensors_2016.pdf.txt Extracted text text/plain 74079 https://riubu.ubu.es/bitstream/10259/4378/9/Barquero-Sensors_2016.pdf.txt afe6dedd68a01394d042f9a8a5a210cd MD5 9 10259/4378 oai:riubu.ubu.es:10259/4378 2022-04-29 14:02:47.066 Repositorio Institucional de la Universidad de Burgos bubrep@ubu.es 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