Chemistry: analytical and immunological testing – Blood gas
Patent
1993-04-26
1993-12-21
Housel, James C.
Chemistry: analytical and immunological testing
Blood gas
436127, 436133, 436172, 250367, 250368, 2504591, G01N 3350, H01L 21306, F21V 916
Patent
active
052720888
ABSTRACT:
Europium activated magnesium oxide phosphors are described as useful photoluminescent materials, to be used in methods for detecting the presence or determining the concentration of carbon dioxide in a sample, comprising the steps of a) exposing to a predetermined wavelength range radiation a carbon dioxide-quenchable photoluminescent phosphor put in contact with the sample to cause the phosphor to store energy radiation, b) stimulating the photoluminescent phosphor with infrared radiation to release the stored energy as photoluminescent light, c) detecting and measuring the intensity of said photoluminescent light and d) correlating the measured intensity with an intensity of the photoluminescent light previously measured at a given reference carbon dioxide pressure value.
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Bhat N.
Griswold Gary L.
Hornickel John H.
Housel James C.
Kirn Walter N.
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