Florescent fluid analysis

Details Florescent fluid analysis Florescent fluid analysis

G - Physics

01

N

73/51.5

G01N 21/64 (2006.01) G01N 21/80 (2006.01)

Patent

CA 1219464

Abstract of the Disclosure A fluorescence-based optical sensor includes a membrane immobilized fluorophor secured to one end of a bifurcated fiber optic channel for exposure to the sample to be analyzed. The fiber optic channel also has an input end coupled to a radiation source arranged to supply radiation at two different wavelengths and an ouput end coupled to a bandwidth limited photosensor. The radiation source alternately excites the fluorophor at a first wavelength that excites an acid form of the fluorophor and at a second wavelength that excites a base form of the fluorophor, and a ratio of the resulting fluorescence intensities is taken as a measure of a characteristic of the sample being analyzed.

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