Author, as appears in the article.: Bouhoun, Mohammed L.; Blondeau, Pascal; Louafi, Yamina; Andrade, Francisco J.;

Department: Química Analítica i Química Orgànica

URV's Author/s: Andrade, Francisco Javier / Blondeau, Pascal Jean Claude Leon

Keywords: Whole Water hardness Strip Selectivity Potentiometry Point-of-care Paper-based sensors Magnesium K+ Glucose Electrode Cardiovascular mortality Calcium

Abstract: A novel paper-based potentiometric platform for the simple and fast monitoring of water hardness is presented. First, potentiometric ion-selective electrodes for calcium and magnesium printed on a paper substrate were built and optimized. These sensors, which display near-Nernstian sensitivity, were used for the determination of the concentration of these cations and the calculation of the water hardness. Second, the incorporation of a solid-state reference electrode allowed building an integrated paper-based potentiometric cell for the determination of the hardness of artificial and real samples (mineral waters). The validation of the results shows good ability to predict hardness in the conventional scale. Truly decentralized measurements were demonstrated by integration of a miniaturized instrument and dedicated software in a portable device. The measurements were able to be performed in just under two minutes, including a two-point calibration. Since the method is simple to use and cost-effective, it can be implemented in domestic and industrial settings.

Thematic Areas: Química Physical and theoretical chemistry Materiais Instruments & instrumentation Farmacia Electrochemistry Ciencias sociales Ciência de alimentos Chemistry, analytical Astronomia / física Analytical chemistry

licence for use: https://creativecommons.org/licenses/by/3.0/es/

Author's mail: pascal.blondeau@urv.cat franciscojavier.andrade@urv.cat

Author identifier: 0000-0003-1331-5055 0000-0003-1199-2837

Record's date: 2023-02-19

Papper version: info:eu-repo/semantics/publishedVersion

Link to the original source: https://www.mdpi.com/2227-9040/9/5/96

Licence document URL: http://repositori.urv.cat/ca/proteccio-de-dades/

Papper original source: Chemosensors (Basel). 9 (5):

APA: Bouhoun, Mohammed L.; Blondeau, Pascal; Louafi, Yamina; Andrade, Francisco J.; (2021). A Paper-Based Potentiometric Platform for Determination of Water Hardness. Chemosensors (Basel), 9(5), -. DOI: 10.3390/chemosensors9050096

Article's DOI: 10.3390/chemosensors9050096

Entity: Universitat Rovira i Virgili

Journal publication year: 2021

Publication Type: Journal Publications