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Development of the New Fluoride Ion-Selective Electrode Modified with FexOy Nanoparticles

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Department of Environmental Chemistry, Faculty of Chemistry and Technology, R. Boškovića 35, 21000 Split, Croatia
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Department of Chemistry and Biochemistry, Faculty of Chemistry and Chemical Technology, Večna pot 113, 1000 Ljubljana, Slovenia
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Department of Chemical Engineering and Technical Safety, Faculty of Chemistry and Chemical, Technology, Večna pot 113, 1000 Ljubljana, Slovenia
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Department of Analytical Chemistry, Faculty of Chemistry and Technology, R. Boškovića 35, 21000 Split, Croatia
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University of Split, Faculty of Science, Department of Chemistry, R. Boškovića 33, 21000 Split, Croatia
*
Author to whom correspondence should be addressed.
Academic Editors: Angelina Angelova and Grzegorz D. Sulka
Molecules 2020, 25(21), 5213; https://doi.org/10.3390/molecules25215213
Received: 5 October 2020 / Revised: 5 November 2020 / Accepted: 6 November 2020 / Published: 9 November 2020
(This article belongs to the Section Analytical Chemistry)
A new modified ion-selective electrode with membranes of LaF3 single crystals with different internal contacts (solid steel or electrolyte) and with FexOy nanoparticles as loading was developed. The best response characteristic with linear potential change was found in the fluoride concentration range from 10−1 to 3.98 × 10−7 M. The detection limit for the electrolyte contact was determined at 7.41 × 10−8 M with a regression coefficient of 0.9932, while the regression coefficient for the solid contact was 0.9969. The potential change per concentration decade ranged from 50.3 to 62.4 mV, depending on whether the contact was solid or electrolytic. The prepared modified electrode has a long lifetime, as well as the possibility of application in different positions (solid contact), and it can also be used for the determination of iron ions. The electrode characterization was performed with scanning electron microscopy and elemental analysis with the technique of electron-dispersive X-ray spectroscopy. View Full-Text
Keywords: ion-selective electrode; fluoride; metal nanoparticles; internal contact; elemental analysis ion-selective electrode; fluoride; metal nanoparticles; internal contact; elemental analysis
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MDPI and ACS Style

Radić, J.; Bralić, M.; Kolar, M.; Genorio, B.; Prkić, A.; Mitar, I. Development of the New Fluoride Ion-Selective Electrode Modified with FexOy Nanoparticles. Molecules 2020, 25, 5213. https://doi.org/10.3390/molecules25215213

AMA Style

Radić J, Bralić M, Kolar M, Genorio B, Prkić A, Mitar I. Development of the New Fluoride Ion-Selective Electrode Modified with FexOy Nanoparticles. Molecules. 2020; 25(21):5213. https://doi.org/10.3390/molecules25215213

Chicago/Turabian Style

Radić, Josip, Marija Bralić, Mitja Kolar, Boštjan Genorio, Ante Prkić, and Ivana Mitar. 2020. "Development of the New Fluoride Ion-Selective Electrode Modified with FexOy Nanoparticles" Molecules 25, no. 21: 5213. https://doi.org/10.3390/molecules25215213

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