利用導電度檢測酒類中離子交換及離子排阻層析特性   全文下載

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

利用離子交換及離子排阻方式之高效液相層析法，針對15 種來自世界各地的酒類，進行酒石酸鹽、蘋果酸鹽、檸檬酸鹽、乳酸鹽、氯化物、硝酸鹽、磷酸鹽、硫酸鹽、鋰、鈉、鉀、鎂及鈣之分離及定量分析。所有陰離子利用電導度檢測。針對所有分析離子，評估及報告優點分析圖。此外，典型的酒類物化特性亦被檢測：色澤、酸度及比重。受測變數間的相關係數被評估與討論。本方法簡單且僅需普通設備；再者，對於上述的離子，其提供了快速、直接及靈敏的定量分析。樣品製備僅於必要時過濾及稀釋。

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.