Display options
Cite
Michalska A, Konopka A, Maj-Zurawska M. All-solid-state calcium solvent polymeric membrane electrode for low-level concentration measurements. Anal Chem. 2003;75(1):141-4doi: 10.1021/ac025916y.
Michalska, A., Konopka, A., & Maj-Zurawska, M. (2003). All-solid-state calcium solvent polymeric membrane electrode for low-level concentration measurements. Analytical chemistry, 75(1), 141-4. https://doi.org/10.1021/ac025916y
Michalska, Agata, et al. "All-solid-state calcium solvent polymeric membrane electrode for low-level concentration measurements." Analytical chemistry vol. 75,1 (2003): 141-4. doi: https://doi.org/10.1021/ac025916y
Michalska A, Konopka A, Maj-Zurawska M. All-solid-state calcium solvent polymeric membrane electrode for low-level concentration measurements. Anal Chem. 2003 Jan 01;75(1):141-4. doi: 10.1021/ac025916y. PMID: 12530830.
Copy Download .nbib Format: NLM
Share it on

Anal Chem. 2003 Jan 01;75(1):141-4. doi: 10.1021/ac025916y.

All-solid-state calcium solvent polymeric membrane electrode for low-level concentration measurements.

Analytical chemistry

Agata Michalska, Anna Konopka, Magdalena Maj-Zurawska

Affiliations

  1. University of Warsaw, Department of Chemistry, Pasteura 1, 02-093 Warsaw, Poland. [email protected]

PMID: 12530830 DOI: 10.1021/ac025916y

Abstract

An all-solid-state calcium-selective electrode with a plastic membrane phase containing a calcium ionophore ETH-1001 placed on poly(3-methylthiophene) ion-to-electron transducting layer functionalized to bind calcium cations has been constructed. The obtained potentiometric sensors were characterized with a calibration line of slope close to Nernstian within the activity from 10(-5) to 0.1 M. For Ca2+ activity lower than 10(-5) M, super-Nernstian behavior was observed. The super-Nernstian response that is observed for electrodes with an internal solution strongly binding primary ions was in this case attributed to incorporation of calcium ions in the modified solid-contact phase. With this arrangement, the evaluation of selectivity coefficients much closer to those that depend on the properties of the ion-selective membrane itself was possible.

Publication Types