Buffer overcoat for CO.sub.2 ion-selective electrodes

Details Buffer overcoat for CO.sub.2 ion-selective electrodes Buffer overcoat for CO.sub.2 ion-selective electrodes

1979-12-05

1981-06-09

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204195M, 427 58, 427123, 427402, 427404, 4274191, G01N 2746, B01D 136

Patent

active

042723280

ABSTRACT:
An ion-selective electrode for analyzing CO.sub.2 concentration in a liquid sample comprises a support having thereon a metal zone, a metal halide zone, an electrolyte zone, a zone comprising a membrane comprising an ionophore and a zone comprising a hydrophilic binder and a buffer in an amount sufficient to provide a solution having a pH in the range of about 7.5 to 9.5 when wetted with about 5 .mu.l of liquid.

REFERENCES:
patent: 3856649 (1974-12-01), Genshaw et al.
patent: 3896008 (1975-07-01), Keyes
patent: 3896020 (1975-07-01), LeBlanc
patent: 4053381 (1977-10-01), Hamblen et al.
patent: 4131428 (1978-12-01), Diggens
patent: 4184936 (1980-01-01), Paul et al.
Tietz, "Fundamentals of Clinical Chemistry", 2nd ed., (1976), p. 893.
"Analytical Chemistry", vol. 43, No. 13, Nov. 1971, pp. 1905 & 1906.
"Analytical Chemistry", vol. 44, No. 4, Apr. 1972, pp. 856 & 857.

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