Paper-supported thin-layer ion transfer voltammetry for ion detection

Article Article scientifique Article Paper-supported thin-layer ion transfer voltammetry for ion detection eng 2019 author Ding Jiawang 863956 author Cherubini Thomas John 794124 author Yuan Dajing 817530 author Bakker Eric 716236 69-76 10.1016/j.snb.2018.10.046 0925-4005 https://linkinghub.elsevier.com/retrieve/pii/S0925400518318094 We report here on paper-supported thin sample layer voltammetry for the determination of ions. To achieve this goal, a simple setup for the coupling of a commercially available electrode to a silver rod electrode was designed and evaluated for paper-supported thin-layer voltammetry. Linear scan ion transfer voltammetry was explored here for ion-selective membranes doped with an ionophore. The ion-transfer processes and electrochemical behaviors of the system are here evaluated and confirmed by numerical simulation. In the proof-of-concept experiments described, the ions tetrabutylammonium chloride (TBA+) and potassium (K+) were studied as model analytes at membranes without and with ionophore, respectively. A linear relationship from 0.1mM to 1.0mM K+ was obtained between the charge and ion concentration. The coexistence of background sodium ions did not give appreciable interference, but the background wave was not completely isolated from the analyte wave, as also confirmed by the model. The methodology was successfully demonstrated for determination of K+ in mineral water. It is anticipated that this paper-supported thin-layer detection approach may provide an attractive readout protocol for disposable paper-based analytical devices as the methodology does not place strict demands on reference electrode performance. Ion transfer voltammetry Thin-layer Paper-supported Ion detection Dewey 540 40 Département de chimie minérale, analytique et appliquée 145 false 772 Groupe Bakker Sensors and Actuators. B, Chemical 280 02b09c12-e286-4dff-ab90-0217b909eddb Article (Published version) Public paper-supported_thin-layer.pdf 1122096 application/pdf openAccess Faculté des sciences / Section de chimie et biochimie / Département de chimie minérale, analytique et appliquée

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Paper-supported thin-layer ion transfer voltammetry for ion detection	Sensors and Actuators. B, Chemical			2019	1 049	284

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Ding, Jiawang