Article
Version 1
Preserved in Portico This version is not peer-reviewed
Sweat Electrolyte Detection Patch for Non-invasive Hydration Monitoring
Version 1
: Received: 13 June 2024 / Approved: 13 June 2024 / Online: 13 June 2024 (11:51:46 CEST)
How to cite: Rodriguez, J. A.; Diaz-Alonso, D. Sweat Electrolyte Detection Patch for Non-invasive Hydration Monitoring. Preprints 2024, 2024060893. https://doi.org/10.20944/preprints202406.0893.v1 Rodriguez, J. A.; Diaz-Alonso, D. Sweat Electrolyte Detection Patch for Non-invasive Hydration Monitoring. Preprints 2024, 2024060893. https://doi.org/10.20944/preprints202406.0893.v1
Abstract
The focus of this work lies in the construction of monitoring system designed in the form of a patch using a long-lasting potentiometric electrolyte concentration sensor from metal electrodes, in a galvanic cell configuration Mg(s)|NaCl(aq)|Cu(s). Initially, a mathematical analysis was conducted on the expected sensor output through the Nernst equation. The experimental phase involved conducting controlled tests in the laboratory using various molar concentrations of sodium chloride (NaCl) in aqueous solution. Results showed that the electrolyte sensor allows for monitoring electrolyte levels in NaCl in the range of 0.02 to 1 M/L, with electrode lifespan exceeding 10 days. On the other hand, when patch is using human sweat during controlled exercise routines, it showed the sensor's capability for monitoring changes in the subjects' hydration levels in real time. The sensor output potential is greater than 1.7 volts when the sensor electrodes are in contact with human sweat, which is equivalent to measuring molar concentrations at normal hydration and moderately high hydration levels. Sensor results indicate that the system can function in a self-powered manner without external batteries. Additionally, the extended lifespan of its electrodes allows for continuous monitoring of imbalances in the human body, showcasing the system capability for long-term health assessment.
Keywords
electrolyte sensor; galvanic cell; sweat ions; electrolyte; hydration levels
Subject
Engineering, Bioengineering
Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Comments (0)
We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.
Leave a public commentSend a private comment to the author(s)
* All users must log in before leaving a comment
