Chemistry: analytical and immunological testing – Oxygen containing – Molecular oxygen
Patent
1987-07-09
1991-08-27
Lacey, David L.
Chemistry: analytical and immunological testing
Oxygen containing
Molecular oxygen
436 68, 436172, 422 8206, 422 91, 2504581, G01N 2164
Patent
active
050432850
ABSTRACT:
This invention is a method and apparatus for detecting the presence of gaseous oxygen and measuring the amount present. In the practice of the invention, luminescence from a luminophor compound is quenched by oxygen. The luminiphor is a conjugated aromatic carbonyl. The intensity of the emitted light is related to the concentration of oxygen in the atmosphere surrounding the conjugated aromatic carbonyl compound. The luminophor compound is located on a polar substrate having free hydroxyl groups at its surface and also having at its surface, in locations adjacent to the luminophor compound, a halogenated hydrocarbon compound containing at least one halogen selected from a group consisting of chlorine, bromine, and iodine. In a preferred embodiment, the invention comprises an oxygen sensor utilizing a fiber-optic light guide to conduct excitation light to a substrate comprised of activated silica gel particles having methylene chloride and N-methylacridone co-deposited on them. A fiber-optic light guide is used to conduct emitted light away from the substrate.
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Allied-Signal Inc.
Fuchs Gerhard H,.
Lacey David L.
Ryther Mary Jo
Snay Jeffrey R.
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