Material compositions for sensors for determination of...

G - Physics – 01 – N

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G01N 31/22 (2006.01) G01N 21/78 (2006.01)

Patent

CA 2625626

A method of quantitatively measuring the concentration of a chemical species in a sample solution with a sensor film. A hydrogel sensor film is prepared having a chemical composition comprising an indicator that changes its optical property in the ultra-violet, visible or near-infrared spectral range upon being exposed to the chemical species in the sample solution. The film is exposed to a fixed amount of the sample solution. The concentration of the chemical species in the sample solution is quantified using the average absorbance measured from the sensor film.

La présente invention a trait à un procédé permettant la mesure quantitative de la concentration d'une espèce chimique dans une solution d'échantillon avec un film capteur. Un film capteur à base d'hydrogel est préparé comportant une composition chimique comprenant un indicateur qui modifie sa propriété optique dans la plage de la lumière ultraviolette, de la lumière visible ou de proche infrarouge lors de son exposition à l'espèce chimique dans la solution d'échantillon. Le film est exposé à une quantité fixe de la solution d'échantillon. La concentration de l'espèce chimique dans la solution d'échantillon est quantifiée au moyen de l'absorbance mesurée à partir du film capteur.

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