AN25 Determination of Inorganic Ions and Organic Aci

INTRODUCTION The determination of inorganic anions and cations and organic acids in non-alcoholic carbonated beverages is of importance from both health-related and manufac- turing perspectives. Organic acids such as citrate and malate, and inorganic anions such as phosphate are monitored due to their function as acidifiers or flavor en- hancers. Chloride is monitored due to restrictions imposed by different countries and many Group I and II metals are monitored for purposes of mass balance. Thus, the content of these compounds needs to be monitored by the manufacturer to maintain product quality and to in- vestigate possible patent infringements in competitive products. Ion chromatography (IC) is a well established tech- nique for the determination of ions in solution. This application note describes the use of ion exchange or ion exclusion chromatography (ICE) with suppressed conductivity detection for the determination of inorganic anions, cations, and organic acids in several popular carbonated beverages. 赛默飞戴安ICS-2100离子色谱系统 赛默飞ICS5000多功能离子色谱