Method for measuring hydrophobic contaminants in paper pulp

Details Method for measuring hydrophobic contaminants in paper pulp Method for measuring hydrophobic contaminants in paper pulp

G - Physics

01

N

G01N 21/64 (2006.01) G01N 21/85 (2006.01) G01N 21/91 (2006.01) G01N 33/34 (2006.01)

Patent

CA 2631709

A method is provided for measuring hydrophobic contaminants distributed in paper pulp suspension. The method comprises: adding a fluorescent dye (18) to the paper pulp suspension (12) including fibers and hydrophobic contaminants, the dye (18) interacting with the hydrophobic contaminants of the paper pulp suspension (12); submitting the paper pulp suspension (12) including the fibers, the hydrophobic contaminants, and the dye (18) to light characterized by a wavelength exciting the dye (18) to produce light emission signals; and detecting the light emission signals and evaluating the signals to measure the hydrophobic contaminants.

La présente invention concerne un procédé pour mesurer les contaminants hydrophobes distribués dans une suspension de pâte à papier. Le procédé consiste : à ajouter un colorant fluorescent (18) à la suspension de pâte à papier (12) comprenant des fibres et des contaminants hydrophobes, le colorant (18) interagissant avec les contaminants hydrophobes de la suspension de pâte à papier (12) ; à soumettre la suspension de pâte à papier (12) comprenant les fibres, les contaminants hydrophobes, et le colorant (18) à une lumière caractérisée par une longueur d~onde excitant le colorant (18) pour produire des signaux d'émission lumineuse ; et à détecter les signaux d~émission lumineuse et à évaluer les signaux pour mesurer les contaminants hydrophobes.

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