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Application of a Screen-Printed Ion-Selective Electrode Based on Hydrophobic Ti 3 C 2 /AuNPs for K + Determination Across Variable Temperatures.

Authors :
Yu Z
Wang H
He Y
Chen D
Chen R
Tang X
Zhou M
Yao J
Xiong B
Source :
International journal of molecular sciences [Int J Mol Sci] 2024 Dec 08; Vol. 25 (23). Date of Electronic Publication: 2024 Dec 08.
Publication Year :
2024

Abstract

Monitoring potassium ion (K <superscript>+</superscript> ) concentration is essential in veterinary medicine, particularly for preventing hypokalemia in dairy cows, which can severely impact their health and productivity. While traditional laboratory methods like atomic absorption spectrometry are accurate, they are also time-consuming and require complex sample preparation. Ion-selective electrodes (ISEs) provide an alternative that is faster and more suitable for field measurements, but their performance is often compromised under variable temperature conditions, leading to inaccuracies. To address this, we developed a novel screen-printed ion-selective electrode (SPE) with hydrophobic Ti <subscript>3</subscript> C <subscript>2</subscript> Mxene and gold nanoparticles (AuNPs), integrated with a temperature sensor. This design improves stability and accuracy across fluctuating temperatures by preventing water layer formation and enhancing conductivity. The sensor was validated across temperatures from 5 °C to 45 °C, achieving a linear detection range of 10 <superscript>-</superscript> ⁵ to 10 <superscript>-1</superscript> M and a response time of approximately 15 s. It also demonstrated excellent repeatability, selectivity, and stability, making it a robust tool for K <superscript>+</superscript> monitoring in complex environments. This advancement could lead to broader applications in other temperature-sensitive analytical fields.

Details

Language :
English
ISSN :
1422-0067
Volume :
25
Issue :
23
Database :
MEDLINE
Journal :
International journal of molecular sciences
Publication Type :
Academic Journal
Accession number :
39684915
Full Text :
https://doi.org/10.3390/ijms252313204