Significant Reduction of Analysis Time with Bulk Sensors Operating in Nonequilibrium Mode

Autor:	Andrey V. Kalinichev, Nadezhda V. Pokhvishcheva, Maria A. Peshkova
Rok vydání:	2019
Předmět:	Reproducibility Aqueous solution Chemistry Mode (statistics) Analytical chemistry Non-equilibrium thermodynamics Sensitivity (control systems) Electrolyte Reduction (mathematics) Analytical Chemistry
Zdroj:	Analytical Chemistry. 91:5362-5370
ISSN:	1520-6882 0003-2700
DOI:	10.1021/acs.analchem.9b00459
Popis:	The concept of reducing the analysis time with the bulk sensors operating in nonequilibrium mode is formulated theoretically and verified experimentally with ion-selective polymeric optodes. The influence of the measurement time on the optical response range, span, median, and sensitivity is calculated and demonstrated experimentally. Model aqueous samples are successfully analyzed using a nonequilibrium measurement protocol with conventional sodium-selective optodes and with pH optodes containing lipophilic organic electrolyte. The analysis time is significantly reduced from 300 to ca. 100 s, with sufficient recovery, reproducibility, and precision of the sample determination.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5065b39fd11f957b9e87c7a7e9f0f45c https://doi.org/10.1021/acs.analchem.9b00459 Zobrazit plný text záznamu