DETERMINATION OF THE SALT CONCENTRATION OF AN AQUEOUS SOLUTION

DETERMINATION OF THE SALT CONCENTRATION OF AN AQUEOUS SOLUTION

A method of determining the concentration of a salt that may be present in a substance containing at least some water, comprising the following steps: a) recording the Raman spectrum of photons scattered by the substance in the wave number range 2500 cm−1 to 4000 cm−1; b) determining, for a given te...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: LIVET JEAN, CLAVERIE-ROSPIDE REMY, FONTANA MARC, CHASSOT JEAN-MARIE, BOURSON PATRICE, DURICKOVIC IVANA, MARCHETTI MARIO
Format: Patent
Sprache:eng
Schlagworte:
COLORIMETRY
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT,POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED,VISIBLE OR ULTRA-VIOLET LIGHT
MEASURING
PHYSICS
RADIATION PYROMETRY
TESTING
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Beschreibung
Zusammenfassung:A method of determining the concentration of a salt that may be present in a substance containing at least some water, comprising the following steps: a) recording the Raman spectrum of photons scattered by the substance in the wave number range 2500 cm−1 to 4000 cm−1; b) determining, for a given temperature of the substance, two points of said spectrum corresponding to two specific wave numbers; c) calculating the ratio of two magnitudes representative of said points to obtain a measurement ratio; and d) comparing said measurement ratio to a reference chart representative of the concentration of the salt for various temperatures as a function of the concentration of said salt. The method advantageously requires no taking of samples and may be contactless.