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Chemosensors 2016, 4(2), 7; doi:10.3390/chemosensors4020007

Development of a Novel Cu(II) Complex Modified Electrode and a Portable Electrochemical Analyzer for the Determination of Dissolved Oxygen (DO) in Water

1
Department of Engineering, University of Messina, C.da di Dio, 98166 Messina, Italy
2
Department of Materials Science and Engineering, Shiraz University, 85115-71946 Shiraz, Iran
3
Department of Chemistry, Indian Institute of Technology, Roorkee, Roorkee 247 667, Uttarakhand, India
*
Author to whom correspondence should be addressed.
Academic Editor: Igor Medintz
Received: 19 January 2016 / Revised: 21 March 2016 / Accepted: 6 April 2016 / Published: 21 April 2016
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Abstract

The development of an electrochemical dissolved oxygen (DO) sensor based on a novel Cu(II) complex-modified screen printed carbon electrode is reported. The voltammetric behavior of the modified electrode was investigated at different scan rates and oxygen concentrations in PBS (pH = 7). An increase of cathodic current (at about −0.4 vs. Ag/AgCl) with the addition of oxygen was observed. The modified Cu(II) complex electrode was demonstrated for the determination of DO in water using chronoamperometry. A small size and low power consumption home-made portable electrochemical analyzer based on custom electronics for sensor interfacing and operating in voltammetry and amperometry modes has been also designed and fabricated. Its performances in the monitoring of DO in water were compared with a commercial one. View Full-Text
Keywords: oxygen sensor; portable electrochemical analyzer; metal complex oxygen sensor; portable electrochemical analyzer; metal complex
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MDPI and ACS Style

Leonardi, S.G.; Bonyani, M.; Ghosh, K.; Dhara, A.K.; Lombardo, L.; Donato, N.; Neri, G. Development of a Novel Cu(II) Complex Modified Electrode and a Portable Electrochemical Analyzer for the Determination of Dissolved Oxygen (DO) in Water. Chemosensors 2016, 4, 7.

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