Ion Exchange and Ion Exclusion Chromatographic Characterization of Wines Using Conductivity Detection

摘要

High performance ion chromatography system employing ion exchange and ion exclusion modes was used for the separation and quantitative analysis of tartarate, malate, citrate, lactate, chloride, nitrate, phosphate, sulfate, lithium, sodium, potassium, magnesium, and calcium in 15 wines originated worldwide. All anions were measured by means of conductivity detection. Analytical figures of merit were assessed and reported for all analyzed ions. In addition, the classic physicochemical properties of wines, i.e. color, acidity and density, were determined. Correlations between measured variables were evaluated and discussed. The proposed procedure is exceptionally simple and requires only regular instrumentation; nevertheless, it provides possibility for fast, straightforward and sensitive quantification of aforementioned ions. Sample preparation required only filtration and dilution where necessary.