G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/64 (2006.01)
Patent
CA 2605416
A system and method for spectrophotometrically measuring the total alkalinity of a liquid sample. In a particular aspect, the method involves equilibration of a CO2 gas with a sample solution across the permeable walls of a Teflon AF 2400 liquid core waveguide. The waveguide acts as both an equilibration membrane and an optical cell in which spectrophotometric pH measurements are obtained via measurements of absorbance ratios.
L'invention concerne un système et un procédé permettant de mesurer de façon spectrophotométrique l'alcalinité totale d'un échantillon liquide. Dans un aspect particulier, le procédé consiste à équilibrer un gaz CO2 avec une solution de dosage à travers les parois perméables d'un guide d'onde à coeur liquide Teflon AF 2400. Le guide d'onde agit comme une membrane d'équilibrage et comme une cellule optique dans laquelle des mesures de pH spectrophotométrique sont obtenues via des mesures de ratios d'absorbance.
Byrne Robert H.
Kaltenbacher Eric
Liu Xuewu
Finlayson & Singlehurst
University Of South Florida
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