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In Situ Potentiometry and Ellipsometry: A Promising Tool to Study Biofouling of Potentiometric Sensors
Malmö högskola, Faculty of Health and Society (HS), Department of Biomedical Science (BMV). Malmö högskola, Biofilms Research Center for Biointerfaces. Johan Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, Åbo-Turku, FIN-20500, Finland.
Malmö högskola, Faculty of Health and Society (HS), Department of Biomedical Science (BMV). Malmö högskola, Biofilms Research Center for Biointerfaces.
Johan Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, Åbo-Turku, FIN-20500, Finland; Faculty of Materials Science and Ceramics, AGH-University of Science and Technology, Krakow, 30-059, Poland.
Johan Gadolin Process Chemistry Centre, c/o Laboratory of Analytical Chemistry, Åbo Akademi University, Åbo-Turku, FIN-20500, Finland.
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2016 (English)In: Analytical Chemistry, ISSN 0003-2700, E-ISSN 1520-6882, Vol. 88, no 6, p. 3009-3014Article in journal (Refereed)
Abstract [en]

In situ potentiometry and null ellipsometry was combined and, used as a tool to follow the kinetics of biofouling of ion-selective electrodes (ISEs). The study was performed using custom-made solid-contact Ki(+)-ISEs consisting of a gold surface with immobilized 6-(ferrocenyl)-hexanethiol as ion-to-electron transducer that was coated with a potassium-selective plasticized polymer membrane. The,electrode potential and the ellipsometric signal (corresponding to the amount of adsorbed protein) Were recorded simultaneously during adsorption of bovine serum albumin (BSA) at the surface of the K+-ISEs. This in situ method may become useful in developing sensors with minimized biofouling.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2016. Vol. 88, no 6, p. 3009-3014
Keywords [en]
ION-SELECTIVE ELECTRODES, PROTEIN ADSORPTION, ELECTROCHEMICAL SENSORS
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Natural Sciences
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URN: urn:nbn:se:mau:diva-15221DOI: 10.1021/acs.analchem.5b04364ISI: 000372391500006PubMedID: 26864883Scopus ID: 2-s2.0-84961118383Local ID: 21945OAI: oai:DiVA.org:mau-15221DiVA, id: diva2:1418742
Available from: 2020-03-30 Created: 2020-03-30 Last updated: 2024-06-17Bibliographically approved

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Arnebrant, ThomasRuzgas, Tautgirdas

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