Low-cost Pencil-Graphite Multi-electrodes for Simultaneous Detection of Iron and Copper

Year 2022, Volume: 9 Issue: 1, 1 - 12, 28.02.2022

Tuğba Özer

https://doi.org/10.18596/jotcsa.949831

Cited By: 1

Abstract

Herein, two novel ion-selective electrodes are reported for simultaneous potentiometric determination of Fe3+ and Cu2+ ions. The liquid polymeric membrane components were optimized and the resulting pencil graphite electrodes gave Nernstian slopes of 20.7 mV/decade and 31.2 mV/decade with lower detection of limit of 1×10-6 mol L-1 and 2×10-6 mol L-1, and wide pH range of 1.5-3.5 and 2.0-4.7 for Fe3+ and Cu2+ ions, respectively. The electrodes exhibited very fast response time (<6 s). In addition, the electrodes exhibited high selectivity for Fe3+ and Cu2+ ions against different cations, which were tested by matched potential method. The sensing platform using the optimized electrodes were integrated with the Internet of Things concept are suitable for simultaneous monitoring of Fe3+ and Cu2+ in real samples with high accuracy and precision.

Keywords

potentiometric, ion selective electrode, copper, iron, internet of things, simultaneous

Supporting Institution

Research Fund of the Yildiz Technical University

Project Number

grant number 2021-07-07-GAP

Thanks

I would like to thank Prof. Dr. Charles S. Henry for editing English language throughout the manuscript.

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