In Situ Potentiometry and Ellipsometry : A Promising Tool to Study Biofouling of Potentiometric Sensors

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In Situ Potentiometry and Ellipsometry : A Promising Tool to Study Biofouling of Potentiometric Sensors

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Publication Article, peer reviewed scientific
Title In Situ Potentiometry and Ellipsometry : A Promising Tool to Study Biofouling of Potentiometric Sensors
Author Lisak, Grzegorz ; Arnebrant, Thomas ; Lewenstam, Andrzej ; Bobacka, Johan ; Ruzgas, Tautgirdas
Research Centre Biofilms - Research Center for Biointerfaces
Date 2016
English abstract
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.
DOI https://doi.org/10.1021/acs.analchem.5b04364 (link to publisher's fulltext.)
Publisher American chemical society
Host/Issue Analytical Chemistry;6
Volume 88
ISSN 0003-2700
Pages 3009-3014
Language eng (iso)
Subject ION-SELECTIVE ELECTRODES
PROTEIN ADSORPTION
ELECTROCHEMICAL SENSORS
Technology
Research Subject Categories::NATURAL SCIENCES
Handle http://hdl.handle.net/2043/21945 Permalink to this page
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