Determination of Organic Acids in Beer Samples Using a High-Pressure Ion Chromatography System

Beer is a complex sample matrix that contains numerous components including proteins, carbon
dioxide, carbohydrates, inorganic anions and cations, aldehydes, organic acids, and ethanol. This Technical Note presents the advantages of the 4 µm particle-size Dionex IonPac AS11-HC-4µm column combined with the Dionex ICS-5000+ HPIC system for optimal separation of organic acids and inorganic anions in beer samples using electrolytically generated hydroxide eluent with and without an organic modifier.