Determination of citric and oxalic acid in mixtures by potentiometric titration

Citric acid and oxalic acid occur in many products, such as food or chemical solvents like decontamination solutions. Both acids are reducing agents and citric acid is additionally a powerful antioxidant. Due to their mutual impact (buffer
effect), a content calculation is only possible with correction factors for each acid. A fast and accurate determination by potentiometric titration using the dEcotrode plus and sodium hydroxide as titrant can be realized.