Short-Chain Organic Acid Anions besides Standard Anions Applying a Dose-in Gradient

Formate, acetate, propionate, and butyrate besides standard anions are determined in a coal extract. To improve the separation of the early eluting organic acid anions, a Dose-in Gradient is applied. Due to the limited sample volume available, Metrohm intelligent Pick-up Technique (MiPuT) is utilized.