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以二氧化碳为流动相,ODS柱为固定相,测定了二十碳五烯酸乙酯(EPA-EE)和二十二碳六烯酸乙酯(DHA-EE)的超临界流体色谱容量因子。从宏观热力学出发,研究了溶质的超临界流体色谱容量因子及其在超临界二氧化碳中溶解度的关系,并用实验数据对该热力学关系作了验证。
Using CO2 as mobile phase and ODS column as stationary phase, the capacity factors of supercritical fluid chromatography of EPA-EE and DHA-EE were determined. Based on the macroscopic thermodynamics, the relationship between the capacity factor of supercritical fluid chromatographic solute and its solubility in supercritical carbon dioxide was studied. The thermodynamic relationship was verified by experimental data.