Method and material for measurement of oxygen concentration
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United States of America Patent
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Mar 10, 1992
Grant Date -
N/A
app pub date -
Apr 26, 1989
filing date -
Apr 26, 1989
priority date (Note) -
Expired
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Abstract
The analyte sensing system utilizes a sensor indicator which may be a perlyene derivative, coronene, or naphtho [8,1,2-abc] coronene in an analyte permeable silicone matrix. The matrix is irradiated with light of a specific wavelength, and fluorescence emissions of the dye indicator is measured over two different emission spectra having different sensitivities to the analyte. The emission spectrum which is less sensitive to quenching by the analyte can be used as a reference for determining the analyte concentration based upon a ratio of the intensities of the different emission spectra.
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