Development of a microfluidic collection system to measure electrolyte variations in sweat during exercise
A. Steijlen (TU Delft - Electronic Instrumentation)
J. Bastemaijer (TU Delft - Electronic Instrumentation)
WA Groen (TU Delft - Aerospace Structures & Materials)
Kasper Jansen (TU Delft - Emerging Materials)
Patrick J. French (TU Delft - Bio-Electronics)
A Bossche (TU Delft - Electronic Instrumentation)
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Abstract
A wide variety of electrochemical sweat sensors are recently being developed for real-time monitoring of biomarkers. However, from a physiological perspective, little is known about how sweat biomarkers change over time. This paper presents a method to collect and analyze sweat to identify inter and intraindividual variations of electrolytes during exercise. A new microfluidic sweat collection system is developed which consists of a patch covering the collection surface and a sequence of reservoirs. Na+, Cl- and K+ are measured with ion chromatography afterwards. The measurements show that with the new collector, variations in these ion concentrations can be measured reliably over time.