Anaerobic fluorescence titration of dithionite solutions
Abstract
A dithionite stock solution can readily be assayed by pressurising the storage tube and allowing a small portion of the solution to enter a syringe containing an oxygen-free solution of flavin mononucleotide (FMN) of known volume and concentration. The disappearance of the FMN fluorescence is the end-point of the titration. The change in mass of the storage tube is used to calculate the dithionite molarity.