Emulsion Doping of Ionophores and Ion-Exchangers into Ion-Selective Electrode Membranes

Article Article scientifique Article Emulsion Doping of Ionophores and Ion-Exchangers into Ion-Selective Electrode Membranes eng 2020 author Soda Yoshiki 0000-0003-2288-4778 904281 author Gao Wenyue 891316 author Bosset Jérôme 651592 author Bakker Eric 716236 14319-14324 10.1021/acs.analchem.0c02920 33084307 0003-2700 Ion-selective electrodes (ISEs) are widely used analytical devices to selectively measure ionic species. Despite significant advances in recent years, ion-selective membranes are still mostly prepared in the same manner, by preloading the selective components into a solvent that is subsequently cast into a membrane or film. This paper describes an alternative method to prepare ISE membranes by mass transfer of the sensing components from an emulsion phase. Specifically, blank (undoped) plasticized poly(vinyl chloride) (PVC) membranes mounted into an electrode body are immersed into an aqueous solution containing analyte ions and an appropriate emulsion of the desired sensing components to allow their transfer into the membrane. The concept is demonstrated with conventional membrane electrodes containing an inner solution as well as all-solidstate electrodes. It is shown to be universally useful for the realization of ISEs for K+, Na+, Ca2+, and NO3−. Dewey 540 Dewey 590 Swiss National Science Foundation FN 200021_175622 CH 40 Département de chimie minérale, analytique et appliquée 145 44 Département de génétique et évolution 162 false 772 Groupe Bakker Analytical Chemistry 92 21 580a2a06-d659-4a3f-aa30-f58c96a9a277 Article (Published version) Public acs.analchem.0c02920.pdf_Doping.pdf 1620354 application/pdf openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée Faculté des sciences / Section de biologie / Département de génétique et évolution

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Emulsion Doping of Ionophores and Ion-Exchangers into Ion-Selective Electrode Membranes	Analytical Chemistry			2020	280	543

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Bosset, Jérôme