In this work, we propose a potentiometric smart sensor for lithium detection in environmental samples based on a screen-printed cell. The graphite screen-printed electrode (GSPE) was first modified by gold and silver nanoparticles to increase the conductivity, and then by an ion-selective membrane, which was directly deposited onto the nanostructured electrode surface. The potentiometric cell, thanks to its small size, was integrated with a portable instrument connected to a smartphone for decentralized analysis. The developed sensor was used in drop- and microflow-configurations and showed a high sensitivity for lithium with a low detection limit (1.6 mu M). It was also applied in the analysis of real samples from the industrial recycling of automotive batteries and complex matrices, such as contaminated soils.

Smart Sensor for Lithium Detection: An Environmental Application / Vitale, IA; Selvolini, G; Marrazza, G. - In: CHEMOSENSORS. - ISSN 2227-9040. - ELETTRONICO. - 11:(2023), pp. 0-0. [10.3390/chemosensors11020077]

Smart Sensor for Lithium Detection: An Environmental Application

Vitale, IA;Selvolini, G;Marrazza, G
2023

Abstract

In this work, we propose a potentiometric smart sensor for lithium detection in environmental samples based on a screen-printed cell. The graphite screen-printed electrode (GSPE) was first modified by gold and silver nanoparticles to increase the conductivity, and then by an ion-selective membrane, which was directly deposited onto the nanostructured electrode surface. The potentiometric cell, thanks to its small size, was integrated with a portable instrument connected to a smartphone for decentralized analysis. The developed sensor was used in drop- and microflow-configurations and showed a high sensitivity for lithium with a low detection limit (1.6 mu M). It was also applied in the analysis of real samples from the industrial recycling of automotive batteries and complex matrices, such as contaminated soils.
2023
11
0
0
Vitale, IA; Selvolini, G; Marrazza, G
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/1305581
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