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AB137: Determination of Inorganic and Organic Acids in Apple and Orange Juice Samples Using Capillary IC

Instrument Type: IC

Determinations of organic acids in fruit juices are used by the beverage industry for flavor characterization, identification of spoilage, identification of adulteration by a less costly juice, and product labeling. In this study, inorganic anions and organic acids in diluted filtered apple and orange juice samples were determined on a Dionex IonSwift MAX-100 anion-exchange column using electrolytically generated hydroxide gradient from 0.1–65 mM KOH over 25 min at 15 μL/min.

AN123: Determination of Inorganic Anions and Organic Acids in Fermentation Broths

Instrument Type: IC

Fermentation broths are complex mixtures of nutrients, waste products, cells and cell debris, and desired products. Fermentation monitoring is important for many industries because carbon sources and metabolic by-products can impact the yield of the desired products. This application note describes the use of two different anion-exchange columns, IonPac AS11 and IonPac AS11-HC, with suppressed conductivity detection, to analyze common organic and inorganic anions in yeast and bacterial fermentation broths.

AN107: Ions (Anions) in Physiological Fluids

Instrument Type: IC

One of the most important applications of IC in clinical chemistry is the analysis of physiological fluids such as urine, plasma, and serum both for inorganic and organic anions and cations. This application note outlines the analysis of physiological fluids using ion chromatography. Part one shows the anion method, the IonPac AS11 is coupled with the Anion Self-Regenerating Suppressor (ASRS) to dramatically reduce eluent conductivity, thus allowing the use of a rapidly increasing hydroxide gradient for the separation of an extensive group of monovalent through trivalent.

AN106: Ion Chromatography in the Pharmaceutical Industry (Anions)

Instrument Type: IC

Ion Chromatography is a simple and accurate technique for the analysis and quantification of charged species. This application note describes the use of ion exchange chromatography and ion exclusion chromatography in the pharmaceutical industry for the analysis of ions in ingredients and final products. The topic of cleaning validation is also discussed as it applies to charged species. Here shows the separation of 8 anions that might be found in pharmaceutical formulations by anion exchange chromatography using the IonPac AS11 column.

TN119: Fast Separations of Organic Acids in an Orange Juice Sample Using High-Pressure Capillary IC

Instrument Type: IC

Determinations of organic acid profiles in fruit juices are used in the beverage industry to characterize flavor, identify spoilage and potential sources of adulteration, and to meet labeling requirements for food products. In this study, inorganic anions and organic acids from a diluted orange juice sample are separated by anion-exchange chromatography on a capillary size IonSwift MAX-100 monolith IC column and detected by suppressed conductivity detection. For more information on organic acid determinations in fruit juices, please review AN143. An ICS-6000 can be used for this application.