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Determination of High Sugar Concentrations in a Malbec Wine Sample Using a Compact Ion Chromatography System

Instrument Type: IC

This record demonstrates the determinations of glucose in a 100-fold diluted Malbec wine sample by HPAE-PAD. Typically samples with g/L concentrations require > 10,000-fold dilutions to remain in the linear range of the very sensitive HPAE-PAD technique. However, this method, demonstrated on the Integrion RFIC system, uses a 0.4 µL internal injection loop with the High Concentration Carbohydrate Analysis Kit to extend the linearity from low mg/L to g/L concentrations. A wood hydrolysate application using this technique is attached for reference.

AU145: Determination of Perchlorate in Drinking Water by Ion Chromatography

Instrument Type: IC

In this updated method, the perchlorate anion is determined in 15 min by using a 2 mm Dionex IonPac AS16 column, EG50-generated hydroxide eluent, a 1000 μL injection, and suppressed conductivity detector. The resulting single-operator method detection limit (MDL) for perchlorate in a simulated high-ionic-strength water sample was 0.10 μg/L after sample preparation.