Selectively permeable film and ion sensor

Details Selectively permeable film and ion sensor Selectively permeable film and ion sensor

1982-01-15

1986-01-07

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204433, 204 1T, G01N 2726

Patent

active

045632634

ABSTRACT:
A selectively permeable film directly applied to coat the surface of an electroconductive element, said electively permeable film comprising a polymer which is derived from at least one aromatic compound selected from the group of nitrogen-containing aromatic compounds or from the group of hydroxy aromatic compounds. The nitrogen-containing aromatic compounds are aniline, 2-aminobenzotrifluoride, 2-aminopyridine, 2,3-diaminopyridine, 4,4'-diaminodiphenyl ether, 4,4'-methylenedianiline, tyramine, N-(o-hydroxybenzyl)-aniline and pyrrole. The film coated on the electrode surfaces permits selective passage of ions and the electrode can be used as an ions sensor for measuring the concentration of ions in solutions.

REFERENCES:
patent: 3840452 (1974-10-01), Baum et al.
patent: 4115209 (1978-09-01), Freiser et al.
patent: 4151049 (1979-04-01), Janata
patent: 4334054 (1982-06-01), Dubois et al.
LeBlanc, O. H., Grubb, W. T., "Long-Lived Potassium Low Selective Polymer Membrane Electrode", Anal Chem., vol. 48, No. 12, pp. 1658-1660, 10/76.

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