Ionophore-free potentiometric sensor for the determination of calcium(II) ions

Onur Cem Altunoluk; İsa Mert Eşki

Ionophore-free potentiometric sensor for the determination of calcium(II) ions

Abstract

In this study, ionophore-free polymer membrane potentiometric sensors were produced, and then these newly produced sensors were found to exhibit selective behavior towards calcium(II) ions. The developed calcium(II)-selective potentiometric sensor had a low detection limit of 6.64×10−6 mol L−1 over a wide concentration range of 1.0×10−1–1.0×10−5 mol L−1. The proposed calcium(II)-selective sensor also had a fast response time (<8 s), good reproducibility, low-cost fabrication, and wide pH working range (3.0–10.0). Finally, the fabricated ionophore-free sensors were shown to be able to detect calcium(II) ions in environmental water samples with very high recovery rates, pointing to their applicability in the analyses of real samples.

Keywords

calcium (II) , ion-selective electrodes , sensor , potentiometry , ionophore-free

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Details

Primary Language

English

Subjects

Sensor Technology

Journal Section

Research Article

Authors

Onur Cem Altunoluk ^*
0000-0003-3558-3499
Türkiye

İsa Mert Eşki
0009-0000-8192-0340
Türkiye

Publication Date

December 29, 2025

Submission Date

November 28, 2025

Acceptance Date

December 24, 2025

Published in Issue

Year 2025 Volume: 2 Number: 2

IZ

https://izlik.org/JA95WD67UL

APA

Altunoluk, O. C., & Eşki, İ. M. (2025). Ionophore-free potentiometric sensor for the determination of calcium(II) ions. Turkish Journal of Sensors and Biosensors, 2(2), 18-26. https://izlik.org/JA95WD67UL

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