Ion selective electrode

Details Ion selective electrode Ion selective electrode

1990-05-18

1992-05-12

Niebling, John

Chemistry: electrical and wave energy

Apparatus

Electrolytic

20415313, 20415315, G01N 2726

Patent

active

051124718

ABSTRACT:
The present invention provides an ion selective electrode for anions such as Cl.sup.- and cations such as Ca.sup.2+ which has a sensitive membrane comprising a polymer material and containing an ion sensitive material and a plasticizer. In thins ion selective electrode, the ion sensitive material is an ion exchanger such as a quaternary ammonium salt, a quaternary phosphonium salt or an organic phosphate and the plasticizer is a compound having the formula (1): ##STR1## wherein X represents an alkyl group, a phenyl group or a phenyl group to which a functional group bonds. As the plasticizer there may also be used a mixture of the compound of the formula (1) with an alcohol compound such as an alcohol having a dielectric constant of 10 or less and containing 10 or more carbon atoms or an ester compound.

REFERENCES:
patent: 4519891 (1985-05-01), Sugahara et al.
patent: 4810331 (1989-03-01), Garrison et al.
patent: 4936975 (1990-06-01), Shibata et al.
D. Wegman et al., "Microchimica Acts", (Wein), 1984 III, 1.

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