Improvement of solid-contact lithium ion-selective electrodes: Super-Nernstian sensitivity and calibration-free approaches for decentralized analysis

Identifier:  TFG:6232

Handle: https://hdl.handle.net/20.500.11797/TFG6232

Authors:  Saez Bravo, Patricia

Abstract:
This bachelor’s thesis is centered on the characterization and improvement of an analytical measurement procedure with potentiometric detection using paper-based sensors. Ion-selective electrodes used in potentiometry have many advantages but also some limitations. The most important limitations are the fix sensitivity depending on the charge of the ion and the need for calibration before every analysis. There are some approaches on the literature to overcome these limitations: an array of ion-selective electrodes that can generate a super-Nernstian sensitivity and the integration of a redox buffer species on the membrane that can improve the reproducibility of the standard potential.