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