Indicator containing perfluorinated polyurethane membranes for u

Details Indicator containing perfluorinated polyurethane membranes for u Indicator containing perfluorinated polyurethane membranes for u

1995-05-24

1997-05-27

Bhat, Nina

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

528 70, 436136, 436138, 436172, G01N 2164, G02B 108

Patent

active

056329580

ABSTRACT:
A ratiometric method for using optical sensors is provided to measure dissolved oxygen in a fluid sample. The sensor is formulated so as to contain an oxygen permeable membrane of a cured perfluorinated urethane polymer and, incorporated therein, an oxygen-sensitive indicator component and a reference dye component. The emission spectrum from the indicator component is calibrated by comparison with that of the reference dye, which is substantially less sensitive to oxygen-quenching and which has a photodecomposition rate similar to the indicator component. Methods for making and using the membrane and sensor are provided as well.

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Seitz, "Chemical Sensors Based on Fiber Optics," Anal. Chem. (1984) 56(1):17A-34A.

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