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Open AccessArticle

Study of the Dielectric Properties of Artificial Sweat Mixtures at Microwave Frequencies

1
Electronics and Electrical Communication Department, Faculty of Engineering, Ain Shams University, Cairo 11517, Egypt
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Schulich School of Engineering, University of Calgary, Calgary, AB T2N1N4, Canada
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Author to whom correspondence should be addressed.
Biosensors 2020, 10(6), 62; https://doi.org/10.3390/bios10060062
Received: 17 April 2020 / Revised: 5 June 2020 / Accepted: 5 June 2020 / Published: 9 June 2020
Analysis of sweat is of interest for a variety of diagnosis and monitoring applications in healthcare. In this work, detailed measurements of the dielectric properties of solutions representing the major components of sweat are presented. The measurements include aqueous solutions of sodium chloride (NaCl), potassium chloride (KCl), urea, and lactic acid, as well as their mixtures. Moreover, mixtures of NaCl, KCl, urea, and lactic acid, mimicking artificial sweat at different hydration states, are characterized, and the data are fitted to a Cole–Cole model. The complex dielectric permittivity for all prepared solutions and mixtures is studied in the range of 1–20 GHz, at temperature of 23 °C, with ionic concentrations in the range of 0.01–1.7 mol/L. View Full-Text
Keywords: dielectric spectroscopy; dielectric properties; artificial sweat; sweat electrolytes; sweat monitoring; hydration monitoring dielectric spectroscopy; dielectric properties; artificial sweat; sweat electrolytes; sweat monitoring; hydration monitoring
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MDPI and ACS Style

Eldamak, A.R.; Thorson, S.; Fear, E.C. Study of the Dielectric Properties of Artificial Sweat Mixtures at Microwave Frequencies. Biosensors 2020, 10, 62.

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