Patent ID: 6913672

Claim:
A method of determining wood pulping parameters in a boron-containing alkaline wood pulping liquor sample comprising the steps of: (i) subjecting a first aliquot portion of the boron-containing sample to a primary acid titration analysis to derive multiple equivalence points at different respective pH values; (ii) subjecting a second aliquot portion of the boron-containing sample to an analysis by an analytical method other than acid titration, to determine the quantitative presence of boron or sulfide ions therein; and then (iii) deriving algorithmically at least one of said wood pulping parameters, selected from the group consisting of Active Alkali, total Titratable Alkali excluding Metaborate, Sulfidity of the green liquor, Sulfidity of the white liquor, Causticizing Efficiency, Activity and Causticity, based on the combined analytical results of steps (i) and (ii), thereby overcoming interference due to the presence of boron in the sample.