The work presented details the development of a lowcost potentiostat, with the aim of creating an ink-jet printed hybrid paper-based low-cost sensing system for rapid water quality monitoring. Potentiostats exhibit high sensitivities and can be used for a variety of applications. In this application, they use electrochemical techniques to detect heavy metals via stripping analysis. The potentiostat front-end, consisting of an LMP91000 sensing chip, was designed and manufactured on a printed circuit board (PCB) and compared to a laboratory-based potentiostat using cyclic voltammetry performed using an 80 µl sample of 5 mM ferriferrocyanide dropped onto a commercial screen-printed electrode. The results obtained from the PCB potentiostat are comparable to those obtained using the development board and the laboratorybased potentiostat. The results highlight the functionality of a lowcost point-of-need potentiostat that can be used for environmental monitoring as well as the feasibility of transferring the design to a paper substrate.
Reference:
Bezuidenhout, P.H., Smith, S.,Land,K.J and Joubert, T-H. 2017, A low-cost potentiostat for point-of-need diagnostics. IEEE AFRICON 2017
Bezuidenhout, P. H., Smith, S., Land, K. J., & Joubert, T. (2017). A low-cost potentiostat for point-of-need diagnostics. IEEE AFRICON 2017. http://hdl.handle.net/10204/9702
Bezuidenhout, Petrone H, Suzanne Smith, Kevin J Land, and T-H Joubert. "A low-cost potentiostat for point-of-need diagnostics." (2017): http://hdl.handle.net/10204/9702
Bezuidenhout PH, Smith S, Land KJ, Joubert T, A low-cost potentiostat for point-of-need diagnostics; IEEE AFRICON 2017; 2017. http://hdl.handle.net/10204/9702 .
Copyright: 2017 IEEE AFRICON. This is the post-print version of the work titled "A low-cost potentiostat for point-of-need diagnostics". IEEE AFRICON 2017, 18-20 September 2017, Cape Town, South Africa
