Chiang Mai Journal of Science

A Compact, Portable, and Low-cost Potentiostat with Smartphone for Electrochemical Sensors

Paper Type	Contributed Paper
Title	A Compact, Portable, and Low-cost Potentiostat with Smartphone for Electrochemical Sensors
Author	Watcharin Permwong, Chidkamon Thunkhamrak, Jantima Upan, Jaroon Jakmunee and Somkid Pencharee
Email	Somkid.p@ubu.ac.th
Abstract:  We have designed and developed a compact, portable, and low-cost potentiostat for application in electrochemical sensors. The device comprises a potentiostat circuit, a Bluetooth wireless communication unit, and an Andriod software application for running voltammetric analysis on a smartphone. The device can apply voltage to a three-electrode electrochemical cell system in the range of -2.0 to 2.0 V, with 1.0 mV resolution. The current responses were measured up to -0.25 and 0.25 mA for cathodic and anodic reactions, respectively, with resolution of 2 μA, showing good sensitivity. Performance test results indicate that the accuracy and stability of the developed potentiostat are very good. The analytical data were transmitted in real-time to display as a voltammogram and store on a smartphone, and can be transferred to a personal computer for further evaluation. The proposed potentiostat was applied in electrochemical sensor for the determination of acetaminophen (AC), employing a screenprinted carbon electrode modified with carbon nanotube for enhancing sensitivity. A linear calibration graph was achieved in the range of 0.025-0.75 mM, with a detection limit of 0.010 mM. The developed sensor and device were successfully applied for determining AC in pharmaceutical tablets, indicating good sensitivity, selectivity, and precision. The developed potentiostat is a promising device for the development of various electrochemical sensors in the future.
Start & End Page	1183 - 1194
Received Date	2020-04-30
Revised Date	2020-06-09
Accepted Date	2020-06-09
Full Text	Download
Keyword	portable potentiostat, electrochemical sensor, cyclic voltammetry, acetaminophen, wireless, smartphone
Volume	Vol.47 No.6 (November 2020)
DOI
Citation	Permwong W., Thunkhamrak C., Upan J., Jakmunee J. and Pencharee S., A Compact, Portable, and Low-cost Potentiostat with Smartphone for Electrochemical Sensors, Chiang Mai J. Sci., 2020; 47(6): 1183-1194.
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