Process and equipment for the determination of certain component

Details Process and equipment for the determination of certain component Process and equipment for the determination of certain component

1975-03-17

1976-06-08

Reese, Robert M.

Chemistry: physical processes

Physical processes

Crystallization

23254E, 324 30B, G01N 2706, G01N 3106

Patent

active

039618951

ABSTRACT:
A component of a gaseous mixture, particularly carbon dioxide, can be measured in extremely small quantities or concentrations, by supporting on a solid surface a thin film of a liquid, e.g. an aqueous solution of barium hydroxide, which reacts with the gaseous component so as substantially to alter the electrical resistance of the solution. The electric resistance of the film is measured between electrodes, before and after exposure to the test gas. The test is much more sensitive than if a confined body of liquid were used as the test solution.

REFERENCES:
patent: 1475000 (1923-11-01), Cooper et al.
patent: 2953441 (1960-09-01), Clauss
patent: 3660034 (1972-02-01), Baranyl et al.

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