Determination of the Selectivity of Printed Wearable Sweat Sensors

Alicia Zörner, Susanne Oertel, Björn Schmitz, Nadine Lang, Michael P. M. Jank, Lothar Frey

Abstract

The characterization and system integration of a fully screen-printed electrolyte biosensor is described. The purpose of this sensor is to determine the state of fitness during sports activity by measuring the ammonium concentration in sweat. Focusing on the selectivity of the ammonium sensor against interfering sodium and potassium ions, the separate solution method (SSM) and the fixed interference method (FIM) are compared on the basis of a single sensing device. The latter is mainly supported by the excellent stability of the sensors. For both interfering ions, the FIM analysis shows a sufficient margin for the operation of the sensor in the desired application in wearable health and fitness monitoring from sweat. The selectivity coefficients are better than 0.01 for sodium and still better than 0.1 for potassium. SSM delivers higher selectivity in both cases, although the discrepancies in selectivity point towards further optimization potential in the sensor architecture or materials combination.

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Paper Citation


in Harvard Style

Zörner A., Oertel S., Schmitz B., Lang N., Jank M. and Frey L. (2017). Determination of the Selectivity of Printed Wearable Sweat Sensors . In Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2017) ISBN 978-989-758-216-5, pages 81-87. DOI: 10.5220/0006296400810087


in Bibtex Style

@conference{biodevices17,
author={Alicia Zörner and Susanne Oertel and Björn Schmitz and Nadine Lang and Michael P. M. Jank and Lothar Frey},
title={Determination of the Selectivity of Printed Wearable Sweat Sensors},
booktitle={Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2017)},
year={2017},
pages={81-87},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0006296400810087},
isbn={978-989-758-216-5},
}


in EndNote Style

TY - CONF
JO - Proceedings of the 10th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 1: BIODEVICES, (BIOSTEC 2017)
TI - Determination of the Selectivity of Printed Wearable Sweat Sensors
SN - 978-989-758-216-5
AU - Zörner A.
AU - Oertel S.
AU - Schmitz B.
AU - Lang N.
AU - Jank M.
AU - Frey L.
PY - 2017
SP - 81
EP - 87
DO - 10.5220/0006296400810087