TY - JOUR

T1 - Significant Reduction of Analysis Time with Bulk Sensors Operating in Nonequilibrium Mode

AU - Kalinichev, Andrey V.

AU - Pokhvishcheva, Nadezhda V.

AU - Peshkova, Maria A.

PY - 2019/4/16

Y1 - 2019/4/16

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85064333151&partnerID=8YFLogxK

U2 - 10.1021/acs.analchem.9b00459

DO - 10.1021/acs.analchem.9b00459

M3 - Article

C2 - 30916553

AN - SCOPUS:85064333151

VL - 91

SP - 5362

EP - 5370

JO - Industrial And Engineering Chemistry Analytical Edition

JF - Industrial And Engineering Chemistry Analytical Edition

SN - 0003-2700

IS - 8

ER -