The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 2022
Filed:
Feb. 21, 2018
Spcm SA, Andrezieux-Boutheon, FR;
Cédrick Favero, Andrezieux-Boutheon, FR;
Renaud Souzy, Andrezieux-Boutheon, FR;
Olivier Braun, Andrezieux-Boutheon, FR;
Alexis Guillard, Andrezieux-Boutheon, FR;
SPCM SA, Andrezieuix-Bouthbon, FR;
Abstract
The present invention concerns a method for determining the concentration of cationic polymers present in a sample, according to the following steps: —bringing the cationic polymer or polymers present in the sample into contact with, and enabling the interaction thereof with, a developer solution comprising lanthanide (III) ions and at least one bonding agent, and —exciting the sample at an excitation wavelength λand detecting, by time resolved photoluminescence, a signal originating from the lanthanide (III) ions having interacted with the at least one bonding agent having previously interacted with the cationic polymer or polymers, at an emission wavelength λ, and —determining the cationic polymer concentration of the sample by using the signal detected at the emission wavelength λ, the sample originating from water originating from municipal or industrial water or sludge treatment processes.