期刊
ANALYTICA CHIMICA ACTA
卷 827, 期 -, 页码 95-102出版社
ELSEVIER
DOI: 10.1016/j.aca.2014.04.022
关键词
Solid-contact ion-selective electrodes; Carbon nanotubes; Flexible sensor; Sweat analysis
资金
- European Union, Marie Curie Program Starting [PCIG09-GA-2011-293538]
- Project FlexSens
- Fundacion Recercaixa (Project SensAge)
- Spanish Ministry of Science and Innovation, Ramon y Cajal Program [CTQ2010-18717]
- Ministerio de Ciencia y Tecnologia, Spain [CTQ2011-27049]
- University of Murcia
The development of a solid-contact potentiometric sensor based on conducting rubbers using a carbon nanotubes ink is described here. Commercial rubbers are turned into conductive ones by a simple and versatile method, i.e. painting an aqueous dispersion of single-walled carbon nanotubes on the polymer surface. On this substrate, both the working ion-selective electrode and the reference electrode are built in order to form an integrated potentiometric cell. As a proof-of-principle, selective potassium electrodes are fully characterized giving comparable performances to conventional electrodes (sensitivity, selectivity, stability, linear range, limit of detection and reproducibility). As an application of the rubber-based electrodes, a bracelet was constructed to measure potassium levels in artificial sweat. Since rubbers are ubiquitous in our quotidian life, this approach offers great promise for the generation of chemical information through daily objects. (C) 2014 Elsevier B.V. All rights reserved.
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