Ph and pco2 sensing by luminescent lifetimes and energy...

G - Physics – 01 – N

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G01N 21/64 (2006.01) G01N 21/76 (2006.01) G01N 31/22 (2006.01) G01N 33/52 (2006.01) G01N 33/84 (2006.01)

Patent

CA 2087412

ABSTRACT OF THE INVENTION A method for determining pH or pCO2 using luminescent lifetimes and energy transfer in which an energy transfer donor- acceptor pair is exposed to a sample to be analyzed, the donor of the donor-acceptor pair being photoluminescent and the acceptor of the donor-acceptor pair being sensitive to the pH or pCO2 of the sample. One or both of the donor-acceptor pair may be bound to a carrier. The sample is irradiated and the resultant emission detected. By measuring the apparent luminescent lifetime, the pH or pCO2 Of the sample can be determined.

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