Liquid film type, anion-selective electrode

Details Liquid film type, anion-selective electrode Liquid film type, anion-selective electrode

1984-01-27

1985-05-28

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

G01N 2730

Patent

active

045198918

ABSTRACT:
A liquid film type, anion-selective electrode of the present invention is suitable for measuring a chloride ion concentration of blood. A sensitive film contains a plurality of plasticizers having different dielectric constants, an anion-sensitive substance and a polymeric support material for supporting them. An appropriate content of o-nitrophenyloctylether having a high dielectric constant is 5-30% by weight, an appropriate content of n-tetradecyl alcohol having a low dielectric constant 5-40% by weight, and an appropriate content of dimethyldioctadecylammonium chloride as the anion-sensitive substance is 5-30% by weight. An electrode for measuring anions with such a sensitive film has less adverse affect by protein on measurements. The sensitive film further containing n-dodecyl alcohol has a much smaller error of measurement.

REFERENCES:
patent: 3840452 (1974-10-01), Baum et al.
patent: 4276141 (1981-06-01), Hawkins
patent: 4349426 (1982-09-01), Sugahara et al.
patent: 4379041 (1983-04-01), Petranek et al.
patent: 4399002 (1983-08-01), Freiser et al.

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