Continuous Acid-free Measurements of Total Alkalinity
A system and method for the substantially continuous measurement of the total alkalinity of a sample solution, which includes, equilibrating a sample solution and a gas at a chosen CO.sub.2 fugacity across a gas permeable membrane, measuring the equilibrium pH of the equilibrated solution in an optical cell using a spectrophotometric pH indicator and calculating the total alkalinity of the solution from the equilibrium pH measurement of the solution and a known partial pressure of CO.sub.2.
US 10,060,891 issued 2018-08-28 [MORE INFO
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