S.p.c.m. Sa

Alexis Guillard

Cédrick Favero

Olivier Braun

Renaud Souzy

The present invention concerns a method for determining the concentration of cationic polymers present in a sample, according to the following steps: &#x2014;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 &#x2014;exciting the sample at an excitation wavelength &#x3bb;and 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 &#x3bb;, and &#x2014;determining the cationic polymer concentration of the sample by using the signal detected at the emission wavelength &#x3bb;, the sample originating from water originating from municipal or industrial water or sludge treatment processes.

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Andrezieux-Boutheon, France

Alexis Guillard