3D-printed flow manifold based on potentiometric measurements with solid-state ion-selective electrodes and dedicated to multicomponent water analysis

Marek Dębosz; Marcin Wieczorek; Justyna Paluch; Jan Migdalski; Bogusław Baś; Paweł Kościelniak

doi:10.1016/j.talanta.2020.121092

3D-printed flow manifold based on potentiometric measurements with solid-state ion-selective electrodes and dedicated to multicomponent water analysis

Talanta. 2020 Sep 1:217:121092. doi: 10.1016/j.talanta.2020.121092. Epub 2020 Apr 28.

Authors

Marek Dębosz¹, Marcin Wieczorek², Justyna Paluch², Jan Migdalski³, Bogusław Baś³, Paweł Kościelniak²

Affiliations

¹ Jagiellonian University in Krakow, Faculty of Chemistry, Department of Analytical Chemistry, Gronostajowa St. 2, Krakow, Poland. Electronic address: marek.debosz@doctoral.uj.edu.pl.
² Jagiellonian University in Krakow, Faculty of Chemistry, Department of Analytical Chemistry, Gronostajowa St. 2, Krakow, Poland.
³ AGH-University of Science and Technology in Krakow, Faculty of Materials Science and Ceramics, Department of Analytical Chemistry, Mickiewicza St. 30, Krakow, Poland.

PMID: 32498863
DOI: 10.1016/j.talanta.2020.121092

Abstract

A 3D-printed flow manifold dedicated to potentiometric simultaneous determination of potassium, sodium, calcium and chloride in water is presented. The method is based on application of miniature solid-contact ion selective electrodes with a special design obtained with the use of 3D printing. The electrodes offer many attractive advantages including short response time and miniaturization feasibility. The use of the proposed novel electrodes enables performance of rapid potentiometric measurements in flow-injection technique and registration of many injection peaks in a short time. One of the advantages of using a special 3D-printed flow vessel for potentiometric measurements was miniaturization of electrodes and the possibility of integrating several (from three up to six) ion selective electrodes in one module enabling realization of multi-component analyses in the same time. Thanks to that the volume of each solution and measurement time were significantly reduced during multi-component analysis. In order to find out if the proposed manifold works properly, three multi-component synthetic samples and four certified reference materials were analyzed. The presented study shows that the proposed 3D-printed flow manifold with solid-state ion-selective electrodes could be an effective tool in a modern multi-component analysis meeting the requirements of green analytical chemistry.

Keywords: 3D-printed flow module; Flow analysis; Ion-selective electrode; Potentiometry; Water analysis.