Author, as appears in the article.: Hoekstra R; Blondeau P; Andrade F

Department: Química Analítica i Química Orgànica

URV's Author/s: Andrade, Francisco Javier / Blondeau, Pascal Jean Claude Leon

Keywords: Wearable sensor Solid contact potentiometry Ion-exchange membrane Conductivity

Abstract: A sensor for monitoring total ion activity is described, and its performance as a wearable device for monitoring the total ion levels of sweat is evaluated. The sensor works by tracking changes in the Donnan potential generated across a Nafion® membrane. This cation-exchange polymer was cast on a paper coated with carbon-ink, making the platform elegantly simple. Analytical parameters during calibration in aqueous solution include a sensitivity of 56.3±1.0 mV/dec.a(Na+) and a standard deviation between standard electrode potentials of 5.3 mV (N=5) for first time use. By integrating a paper based pseudo reference electrode, a miniature disposable electrochemical cell (the ¿IonSens¿ device) was created and demonstrated as a wearable sensor. Potentiometric measurements estimating the total ion activities were validated against conductivity measurements. Recoveries of eleven raw sweat samples were determined to be 95.2±6.6% (n=3). The perspiration conductivity profile of an athlete during exercise was monitored in real-time and visualized on a mobile phone application connected via Bluetooth®. The excellent reproducibility of the electrode without any conditioning is noteworthy and lends itself to applications including ¿ but not limited to ¿ the monitoring of total ion activity in sweat.

Thematic Areas: Saúde coletiva Química Psicología Medicina ii Medicina i Materiais Interdisciplinar Geociências Farmacia Engenharias iii Engenharias ii Electrochemistry Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Chemistry, analytical Biotecnología Biodiversidade Astronomia / física Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: pascal.blondeau@urv.cat franciscojavier.andrade@urv.cat

Author identifier: 0000-0003-1331-5055 0000-0003-1199-2837

Record's date: 2023-02-18

Papper version: info:eu-repo/semantics/acceptedVersion

Link to the original source: https://onlinelibrary.wiley.com/doi/abs/10.1002/elan.201800128

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Electroanalysis. 30 (7): 1536-1544

APA: Hoekstra R; Blondeau P; Andrade F (2018). IonSens: A Wearable Potentiometric Sensor Patch for Monitoring Total Ion Content in Sweat. Electroanalysis, 30(7), 1536-1544. DOI: 10.1002/elan.201800128

Article's DOI: 10.1002/elan.201800128

Entity: Universitat Rovira i Virgili

Journal publication year: 2018

Publication Type: Journal Publications