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dc.contributor.authorDay, C
dc.contributor.authorSøpstad, Sindre
dc.contributor.authorMa, H
dc.contributor.authorJiang, C
dc.contributor.authorNathan, Arokia
dc.contributor.authorElliott, Stephen R
dc.contributor.authorKaret Frankl, FE
dc.contributor.authorHutter, Tanya
dc.date.accessioned2019-03-21T09:20:13Z
dc.date.available2019-03-21T09:20:13Z
dc.date.created2018-11-29T13:35:32Z
dc.date.issued2018
dc.identifier.citationAnalytica Chimica Acta. 2018, 1034, 39-45.nb_NO
dc.identifier.issn0003-2670
dc.identifier.urihttp://hdl.handle.net/11250/2591000
dc.description.abstractA conductometric sensor for potassium ions in solution is presented. Interdigitated, planar gold electrodes were coated with a potassium-selective polymer membrane composed of a poly(vinyl chloride) matrix with about 65 wt% of plasticiser and 2–5 wt% of a potassium-selective ionophore. The impedance of the membrane was measured, using the electrodes as a transducer, and related to the concentration of potassium in a sample solution in contact with the membrane. Sensitivity was optimised by varying the sensor components, and selectivity for potassium over sodium was also shown. The resulting devices are compact, miniature, robust sensors which, by means of impedance measurements, eliminate the need for a reference electrode. The sensor was tested for potassium concentration changes of 2 mM across the clinically relevant range of 2.7–18.7 mM.nb_NO
dc.language.isoengnb_NO
dc.titleImpedance-based sensor for potassium ionsnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.description.versionacceptedVersionnb_NO
dc.source.pagenumber39-45nb_NO
dc.source.volume1034nb_NO
dc.source.journalAnalytica Chimica Actanb_NO
dc.identifier.doi10.1016/j.aca.2018.06.044
dc.identifier.cristin1636979
cristin.unitcode222,58,4,0
cristin.unitnameInstitutt for mikrosystemer
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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