AU157: Using a Reagent-Free Ion Chromatography System to Monitor Trace Anion Contamination in the Extracts of Electronic Components

Instrument Type: IC

Dionex Application Note 153 (AN153) showed that ion chromatography (IC) successfully determines low μg/L and, for some analytes, high ng/L anions in extracts of electronic components. The IC method in AN153 separated 14 inorganic anions and organic acids on an IonPac AS17 column set after sample preconcentration. In this application update a hydroxide gradient program similar to, but faster than, the program used in AN153 separates a new set of 14 anions.

AU153: Fast Determinations of Phosphate and Citrate in Carbonated Beverages

Instrument Type: IC

Phosphoric and citric acids are critical additives to colas for flavor and preservation. However carbon dioxide, added for flavor and as a preservative, interferes with accurate determinations of phosphate and citrate. In this method, carbon dioxide gas as carbonate is removed by the CRD device as the sample is introduced by the autosampler. Citrate and phosphate were separated on IonPac Fast Anion III column optimized for fast 5 min separations. Refer to AN169 for more information on fast citrate and phosphate analysis.