Potentiometric anion selectivities of polymer membranes doped with indium(III)-porphyrins

Autor:	Karl M. Kadish, W. Matuszewski, Mark E. Meyerhoff, Y. H. Liu, S. B. Park
Rok vydání:	1991
Předmět:	Potentiometric titration Inorganic chemistry Synthetic membrane chemistry.chemical_element Chloride Vinyl chloride Analytical Chemistry Ion selective electrode chemistry.chemical_compound Membrane chemistry Electrochemistry medicine Hydroxide Indium medicine.drug
Zdroj:	Electroanalysis. 3:909-916
ISSN:	1521-4109 1040-0397
Popis:	The potentiometric anion responses of polymeric membranes doped with various indium (III)-porphyrin structures are examined. The appropriate membranes are prepared by incorporating 1.0 wt % of the In(III)-porphyrins in plasticized poly(vinyl chloride) films. When such membranes are incorporated within standard ion selective electrode bodies, the resulting electrodes display non-Hofmeister anion selectivity, with a particularly enhanced and super-Nernstian response to chloride. Among those porphyrins investigated, membranes doped with chloro(octaethylporphyrinato)indium(III) yield the largest and most reproducible potentiometric anion responses. These same membrane electrodes exhibit negligible response to protons (or hydroxide) in the range of pH 4.5–9.0. When utilized as a flow-injection detector in conjunction with a protein diluent/buffer stream, the In(III)-porphyrin based electrodes may be used to determine chloride levels in human serum samples.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::71af7d20e05c0720d57260bf1022cd8f https://doi.org/10.1002/elan.1140030906 Zobrazit plný text záznamu Plný text