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Sensors 2018, 18(2), 539;

A COTS-Based Portable System to Conduct Accurate Substance Concentration Measurements

Department of Information and Communication Technologies (TIC), Technical University of Cartagena, ETSIT, Campus Muralla del Mar, E-30202 Cartagena, Spain
Center for Electrochemistry and Intelligent Materials (CEMI), Technical University of Cartagena, ETSII, Campus Alfonso XIII, E-30203 Cartagena, Spain
Author to whom correspondence should be addressed.
Received: 22 December 2017 / Revised: 1 February 2018 / Accepted: 7 February 2018 / Published: 10 February 2018
(This article belongs to the Special Issue State-of-the-Art Sensors Technology in Spain 2017)
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Traditionally, electrochemical procedures aimed at determining substance concentrations have required a costly and cumbersome laboratory environment. Specialized equipment and personnel obtain precise results under complex and time-consuming settings. Innovative electrochemical-based sensors are emerging to alleviate this difficulty. However, they are generally scarce, proprietary hardware and/or software, and focused only on measuring a restricted range of substances. In this paper, we propose a portable, flexible, low-cost system, built from commercial off-the-shelf components and easily controlled, using open-source software. The system is completed with a wireless module, which enables the transmission of measurements to a remote database for their later processing. A well-known PGSTAT100 Autolab device is employed to validate the effectiveness of our proposal. To this end, we select ascorbic acid as the substance under consideration, evaluating the reliability figure and obtaining the calibration curves for both platforms. The final outcomes are shown to be feasible, accurate, and repeatable. View Full-Text
Keywords: screen-printed electrode; potentiostat; cyclic voltammetry screen-printed electrode; potentiostat; cyclic voltammetry

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Aznar-Poveda, J.; Lopez-Pastor, J.A.; Garcia-Sanchez, A.-J.; Garcia-Haro, J.; Otero, T.F. A COTS-Based Portable System to Conduct Accurate Substance Concentration Measurements. Sensors 2018, 18, 539.

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