Factors Affecting the Potentiometric Response of All-Solid-State Solvent Polymeric Membrane Calcium-Selective Electrode for Low-Level Measurements

An all-solid-state calcium-selective electrode was constructed with poly(pyrrole) solid-contact doped with calcium complexing ligand Tiron. The potentiometric response of this sensor can have a linear range down to 10-9 M with a slope close to Nernstian and detection limit equal to 10-9.6. The effec...

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Published in:Analytical chemistry (Washington) 2004-11, Vol.76 (21), p.6410-6418
Main Authors: Konopka, Anna, Sokalski, Tomasz, Michalska, Agata, Lewenstam, Andrzej, Maj-Zurawska, Magdalena
Format: Article
Language:English
Subjects:
Analytical chemistry
Calcium - analysis
Chemistry
Electrochemical methods
Electrodes
Exact sciences and technology
Potentiometry - instrumentation
Potentiometry - methods
Reproducibility of Results
Sensitivity and Specificity
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cited_by cdi_FETCH-LOGICAL-a379t-752d363c13a8190da817a8783b1b40d0ae131c62805bc145e4d4a6599611bf6b3
cites cdi_FETCH-LOGICAL-a379t-752d363c13a8190da817a8783b1b40d0ae131c62805bc145e4d4a6599611bf6b3
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container_issue 21
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container_title Analytical chemistry (Washington)
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creator Konopka, Anna
Sokalski, Tomasz
Michalska, Agata
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Maj-Zurawska, Magdalena
description An all-solid-state calcium-selective electrode was constructed with poly(pyrrole) solid-contact doped with calcium complexing ligand Tiron. The potentiometric response of this sensor can have a linear range down to 10-9 M with a slope close to Nernstian and detection limit equal to 10-9.6. The effects of pH and the activity of the interfering ion in the conditioning solution on the potentiometric behavior of the constructed sensors were examined. Potential stability, reproducibility, and impedance studies were performed. The selectivity of the constructed electrode is better than that of the conventional calcium-selective electrode with internal filling solution of 10-2 M CaCl2 and comparable to that of the best liquid-contact electrodes.
doi_str_mv 10.1021/ac0492158
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source American Chemical Society:Jisc Collections:American Chemical Society Read & Publish Agreement 2022-2024 (Reading list)
subjects Analytical chemistry
Calcium - analysis
Chemistry
Electrochemical methods
Electrodes
Exact sciences and technology
Potentiometry - instrumentation
Potentiometry - methods
Reproducibility of Results
Sensitivity and Specificity
title Factors Affecting the Potentiometric Response of All-Solid-State Solvent Polymeric Membrane Calcium-Selective Electrode for Low-Level Measurements
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