Gas sensor

Details Gas sensor Gas sensor

1987-05-22

1989-06-13

Kalafut, Stephen J.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204424, 204432, G01N 2726

Patent

active

048390208

ABSTRACT:
A gas sensor includes a multi-layered solid-state pH electrode and a reference electrode coated with a gas-sensitive layer (solid-state or gel-state) sensitive to an ion of interest, the surface of the combination being coated with a gas-permable layer. Also provided in a gas sensor having a pH electrode and a reference electrode immersed in a gas-sensitive solution within a gas-permeable layer. Preferably, a fixed distance is maintained between a sensitive portion of the pH electrode, a sensitive portion of the reference electrode and the gas-permeable layer isolated by means of a porous layer. In another emodiment, the gas sensor incorporates a common electrode and a thermister for temperature calibration.

REFERENCES:
patent: 3926764 (1974-12-01), Ruzicka et al.
patent: 3957612 (1976-05-01), Niedrach et al.
patent: 3957613 (1976-05-01), Macur
patent: 4052285 (1977-10-01), Dobson
patent: 4115209 (1978-09-01), Fraiser et al.
patent: 4132616 (1979-01-01), Tanttrom
patent: 4198851 (1980-04-01), Janata
patent: 4214968 (1980-07-01), Battaglia et al.
patent: 4280889 (1981-07-01), Szonntagh
patent: 4282079 (1981-08-01), Chang et al.
patent: 4305802 (1981-12-01), Koshiishi
patent: 4454007 (1984-06-01), Pace
patent: 4473456 (1984-09-01), Hawkins
patent: 4512870 (1985-04-01), Kohara et al.
patent: 4549951 (1985-10-01), Knudson et al.
patent: 4561962 (1985-12-01), Kankare
patent: 4563263 (1986-01-01), Oyama et al.
patent: 4615954 (1986-10-01), Solomon et al.
patent: 4632732 (1986-12-01), Fog et al.
patent: 4700709 (1987-10-01), Kraig
Oyama et al "Electrochemical Properties of Electropolymerized Poly (1-pyrenamine) Films", The Chemical Society of Japan, Jul. 1986.
T. H. Ryan, "Electrochemical Detectors", p. 7.
Ma et al, "Organic Analysis Using Ion-Sensitive Electrodes", vol. 2, pp. 60 & 62.
Tamura et al, "Coated Wire Sodium- and Potassium- Electrodes Based on Bis(crown ether) Compounds", Analytical Chemistry, vol. 54, No. 7, Jun. 1982, pp. 1224-1427.
Wuthier et al, "Tin Organic Compounds as Neutral Carriers for Anion Selective Electrodes", Analytical Chemistry, vol. 56, No. 3, Mar. 1984, pp. 535-538.
Norov et al, "Calcium-Selective Electrode Without an Internal Reference Solution", Journal of Analytical Chemistry, vol. 34, No. 8, Part 1, Aug. 1979.
Oyama et al, "Ion Selective Electrode Prepared By Modifying an Electrode With Polymers", Tokyo Seminar on Macromolecular Complexes, Tokyo Univ., Oct. 14-17, 1987.
Oyama et al, "Hydrogen Ion Selective Microelectrode Prepared by Modifying An Electrode With Polymers", Analytical Chemistry, 1987, vol. 59, pp. 258-262 Jan. 1987.
Oyama, "Ion Selective Microelectrode Prepared By Modifying an Electrode With Polymers", International Electrical Symposium, Schaumberg, Ill., May 27-29 (1987), pp. 122-125.
Oyama et al, "A New Type of Ion-Selective Microelectrodes Using Electropolymerized Thin Films", j-4 Bioelectroanalytical Chemistry Symposium, Honolulu, Hawaii, Oct. 18-23, 1987.
Ammann, "Ion-Selective Microelectrodes", Principles, Design & Application, pp. 5-7, 66 & 100.

Affiliated with

Also associated with

Rating

Gas sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Gas sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Gas sensor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1275347