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Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples

Department of Analytical Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, Maria Curie-Sklodowska Sq. 3, 20-031 Lublin, Poland
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Academic Editors: Barbara Leśniewska and Julita Malejko
Water 2021, 13(20), 2869; https://doi.org/10.3390/w13202869
Received: 30 July 2021 / Revised: 8 October 2021 / Accepted: 12 October 2021 / Published: 14 October 2021
A new copper sensitive all solid-state ion-selective electrode was prepared using multiwalled carbon nanotubes-ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) nanocomposite as an additional membrane component. The effect of nanocomposite content in the membrane on the electrode parameters was investigated. The study compares, among others, detection limits, sensitivity, and the linearity ranges of calibration curves. Content 6 wt.% was considered optimal for obtaining an electrode with a Nernstian response of 29.8 mV/decade. An electrode with an optimal nanocomposite content in the membrane showed a lower limit of detection, a wider linear range and pH range, as well as better selectivity and potential stability compared to the unmodified electrode. It was successfully applied for copper determination in real water samples. View Full-Text
Keywords: copper ion-selective electrode; solid contact; nanocomposite; potentiometry; copper determination copper ion-selective electrode; solid contact; nanocomposite; potentiometry; copper determination
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MDPI and ACS Style

Wardak, C.; Pietrzak, K.; Grabarczyk, M. Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples. Water 2021, 13, 2869. https://doi.org/10.3390/w13202869

AMA Style

Wardak C, Pietrzak K, Grabarczyk M. Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples. Water. 2021; 13(20):2869. https://doi.org/10.3390/w13202869

Chicago/Turabian Style

Wardak, Cecylia, Karolina Pietrzak, and Małgorzata Grabarczyk. 2021. "Ionic Liquid-Multiwalled Carbon Nanotubes Nanocomposite Based All Solid State Ion-Selective Electrode for the Determination of Copper in Water Samples" Water 13, no. 20: 2869. https://doi.org/10.3390/w13202869

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