Chemical apparatus and process disinfecting – deodorizing – preser – Analyzer – structured indicator – or manipulative laboratory... – Means for analyzing liquid or solid sample
Patent
1990-02-16
1992-04-07
Lacey, David L.
Chemical apparatus and process disinfecting, deodorizing, preser
Analyzer, structured indicator, or manipulative laboratory...
Means for analyzing liquid or solid sample
422 8206, 422 52, 422 86, 25022721, 2504581, 2504611, 436172, 385123, G01N 2161
Patent
active
051026252
ABSTRACT:
A sensor for monitoring a condition such as a chemical concentration includes two luminescent materials having differing absorption bands and differing sensitivities to the condition to be monitored. Light in the two absorption bands is applied in alternating sequence so as to elicit emissions from the two luminescent materials in alternating sequence. These emissions are compared to one another and the relationship between them, such as the ratio of their intensities, indicates the condition. The luminescent materials may be porphyrins or derivatives thereof.
REFERENCES:
patent: 3999099 (1976-12-01), Herion
patent: 4305641 (1981-12-01), Witte et al.
patent: 4321057 (1982-03-01), Buckles
patent: 4476870 (1984-10-01), Peterson et al.
patent: 4498004 (1985-02-01), Adolfsson et al.
patent: 4542104 (1985-09-01), Stryer et al.
patent: 4576173 (1986-03-01), Parker et al.
patent: 4592361 (1986-06-01), Parker et al.
patent: 4657736 (1987-04-01), Marsoner et al.
patent: 4712865 (1987-12-01), Hsu et al.
patent: 4725128 (1988-02-01), Bornzin et al.
patent: 4752115 (1988-06-01), Murray, Jr. et al.
patent: 4775514 (1988-10-01), Barnikol et al.
patent: 4810655 (1989-03-01), Khalil et al.
patent: 4861727 (1989-08-01), Hauenstein et al.
patent: 4880972 (1989-11-01), Brogardh et al.
patent: 4900933 (1990-02-01), Nestor et al.
patent: 4900934 (1990-02-01), Peeters et al.
patent: 4925268 (1990-05-01), Iyer et al.
patent: 5001338 (1991-03-01), Boero
Zhujun et al., "A Fluorescence Sensor for Quantifying pH in the Range from 6.5 to 8.5", analytica Chimica Acta 160 (1984), 47-55.
Scheggi et al., "pH Sensing by Fiber Optics", Optica Acta 1986, vol. 33, No. 1587-1597.
Wolfbeis et al., Fluorimetric Analyses: A Study on Fluorescence Indicators for Measuring Near Neutral ("Physiological") pH Values, Fresenius Z Anal Chem. (1983) 314: 119-124.
BOC Health Care, Inc.
Cassett Larry R.
Edwards N.
Lacey David L.
Rathbun Roger M.
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