Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1994-08-04
1995-05-23
Gorgos, Kathryn
Chemistry: electrical and wave energy
Apparatus
Electrolytic
204416, 204435, G01N 2726
Patent
active
054178363
ABSTRACT:
An ion-selective electrode comprises, in order of enumerating from the measured-ion contact side: a solid electrolyte as an ion-sensitive membrane; an ionic bridge layer; and, an internal electrode. The bridge layer is prepared by mixing a salt mixture with an electrically conductive resin composition at a ratio of 1:2 to 3:1 in weight, determined after heat treatment. The salt mixture is prepared by mixing silver halide with sodium phosphate at a ratio of from 9:1 to 3:7 in weight. The electrode is very small in voltage fluctuation detected among products; easily downsized to be capable of measuring a very small amount of a sample solution; and useful in measuring activity of ion species such as Na-ion.
REFERENCES:
patent: 3607710 (1971-09-01), Farren et al.
patent: 4214968 (1980-07-01), Battaglia et al.
patent: 4454007 (1984-06-01), Pace
patent: 4597848 (1986-07-01), Oka et al.
patent: 4686012 (1987-08-01), Engell et al.
patent: 5120422 (1992-06-01), Liu et al.
patent: 5192404 (1993-03-01), Fray et al.
patent: 5308468 (1994-05-01), Katoh et al.
Fabry et al., "Internal Ionic Bride for Ion Solid State Sensors", Proc. of the 2nd Int. Meeting on Chemical Sensors, Bordeaux 1986, 5-02, pp. 473-476. no month available.
Fabry et al., "Nasicon, An Ionic Conductor for Solid-State, Na.sup.+ -Selective Electrode", Sensors and Actuators, 15 (1988) 33-49. no month available.
H. Y-P. Hong, "Crystal Structures and Crystal Chemistry in the System Na.sub.1+x Zr.sub.2 Si.sub.x P.sub.3-x O.sub.12 ", Mat. Res. Bull. vol. 11, Pergamon Press, Inc. 1976, pp. 173-182. no month availiable.
Masuda Chie
Tokumoto Jun-ichi
Bell Bruce F.
Gorgos Kathryn
NGK Spark Plug Co. Ltd.
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