Chemistry: electrical and wave energy – Processes and products
Patent
1981-10-19
1983-05-24
Douglas, Winston A.
Chemistry: electrical and wave energy
Processes and products
204 37R, 204 38A, 204 38C, 20412995, 427 58, 427309, 427330, 4273747, C25D 534, G01N 2736
Patent
active
043849270
ABSTRACT:
A dry glass electrode for use in potentiometric analyses of aqueous media. The electrode comprises a metal conductor constituted of platinum, gold, or tantalum, a layer comprising an oxide of the metal having a thickness of between about 50 Angstrom units and about 2 microns on an outer surface of the metal conductor, and an ion-selective glass membrane over and in electrical contact with the oxide layer. The ion-selective glass has a coefficient of thermal expansion differing by less than about 25% from the coefficient of thermal expansion of the metal.
A method for producing the electrode of the invention is also disclosed.
REFERENCES:
patent: 2422628 (1947-06-01), McCarthy
patent: 3498901 (1970-03-01), Metz et al.
patent: 3673069 (1972-06-01), Niedrach et al.
patent: 3718569 (1973-02-01), Peterson et al.
patent: 3923625 (1975-12-01), Fischer et al.
patent: 3959106 (1976-05-01), Horner et al.
patent: 3973555 (1976-08-01), Moller et al.
patent: 4012308 (1977-03-01), Jerrold-Jones et al.
patent: 4031606 (1977-06-01), Szonntagh
patent: 4133735 (1979-01-01), Afromowitz et al.
patent: 4166020 (1979-08-01), Trampet
M. R. Thompson, "A Metal-Connected Glass Electrode", Bureau of Standards Journal of Research, vol. 9, pp. 883-853 (1932).
Friedman, "Use of Glass Electrode for Measuring Sodium in Biological Systems", Proceedings of the Society for Experimental Biology and Medicine, 99:727 (1958).
Pfaudler, pH Sensor Type 03 Brochure.
Microelectrodes, Inc. flyer.
Douglas Winston A.
Leader William
The Curators of the University of Missouri
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