Miniature probe having multifunctional electrodes for sensing io

Details Miniature probe having multifunctional electrodes for sensing io Miniature probe having multifunctional electrodes for sensing io

1974-11-01

1976-05-18

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

128 2E, 204195R, 204195P, G01N 2746

Patent

active

039576132

ABSTRACT:
A miniature probe for simultaneously sensing ion concentrations and partial pressures of gases in a sample comprises plural sensing electrode systems at least one of which is surrounded by an electrolyte and a gas permeable or ion permeable diffusion barrier. The systems are united structurally to form a probe. Various potentials are measured between components of the electrode systems which potentials are indicative of ion and gas concentrations in the sample in which the probe is inserted. Potentials between certain of the internal probe electrodes and external electrodes are indicative of other ions or gases. Partial pressures of oxygen and carbon dioxide gases and concentrations of hydrogen, bicarbonate ions and other cations and anions are typical constituents of a sample that can be determined with the probe.

REFERENCES:
patent: 3794575 (1974-02-01), Niedrach et al.
patent: 3835013 (1974-09-01), Grubb et al.

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