Kinetic determination of peracid and/or peroxide concentrations

C - Chemistry – Metallurgy – 12 – Q

Patent

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C12Q 1/00 (2006.01) C12Q 1/22 (2006.01) G01N 33/48 (2006.01) G01N 35/00 (2006.01)

Patent

CA 2685966

A use composition monitor determines the concentration of peracid and/or peroxide in a use composition using a kinetic assay procedure. A sample mixture containing a sample of the use composition, a diluent and at least one reagent is prepared and analyzed using, for example, an optical detector. Response data obtained by the detector is indicative of the optical absorbance of the sample mixture as a function of time. A processor analyzes the response data to determine a corresponding best fit linear relationship. The initial absorbance of the sample mixture is indicative of the concentration of peracid in the use composition, while the slope of the best fit equation is indicative of the concentration of peroxide in the use composition.

Selon l'invention, un moniteur détermine la concentration de peracide et/ou de peroxyde dans une composition utilisée par une procédure de dosage cinétique. Un mélange échantillon contenant un échantillon de la composition utilisée, un diluant et au moins un réactif, est préparé et analysé au moyen d'un détecteur optique, par exemple. Les données de réponse obtenues par le détecteur indiquent l'absorbance optique du mélange échantillon en fonction du temps. Un processeur analyse les données de réponse pour déterminer la relation linéaire de meilleur ajustement correspondante. L'absorbance initiale du mélange échantillon indique la concentration de peracide dans la composition utilisée, alors que la pente de l'équation de meilleur ajustement indique la concentration de peroxyde dans la composition.

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