Smartphone-Based Ammonium Ion Biosensor for Sweat Analysis
Volume 7, Issue 2, April 2019, Pages: 61-64
Received: Apr. 18, 2019;
Published: May 23, 2019
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Ying Ni, State Key Laboratory of Bioelectronics, Southeast University, Nanjing, China
Hong Liu, State Key Laboratory of Bioelectronics, Southeast University, Nanjing, China
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In this article, we present a smartphone-based biosensor for detection of the ammonium ion in sweat. The sensing system consists of a sample collection chip, an ammonium ion selective electrode by screen printing, a potential reading chip and a smartphone. When the sweat flows through the sensitive membrane, a membrane potential is generated which can be captured by the potential reading chip linked with the smartphone. The potential signal was then converted to concentration value by a calibration curve. The detection can be achieved within one minute with good repeatability, and the level of the ammonium ion in sweat can reflect the body state during exercise.
Sweat Analysis, Ammonium Ion Detection, Biosensor
To cite this article
Smartphone-Based Ammonium Ion Biosensor for Sweat Analysis, Science Discovery.
Vol. 7, No. 2,
2019, pp. 61-64.