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Published in:
21-06-2018
Bare indium tin oxide electrode for electrochemical sensing of toxic metal ion
Published in: Journal of Materials Science: Materials in Electronics | Issue 16/2018
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Abstract
In this communication, bare indium tin oxide (ITO) electrode has been proposed for electrochemical detection of toxic metal ions. Simultaneous detection of Pb2+, Cu2+ and Hg2+ was achieved using cyclic voltammetry. Further, the bare ITO was also subjected to differential pulse voltammetry (DPV) and electrochemical impedance spectroscopy (EIS) for sensing of Cu2+. The analytical parameters of the developed sensor established, that the simultaneous limit of detection (LOD) for Cu2+ was 0.15 ppm which is under the recommended values by World Health Organization and the United States Environment Protection Agency. DPV and EIS also resulted in a comparable LOD for Cu2+ using bare ITO electrode suggesting it to be a better alternative than modified electrodes.