色谱法研究杂多酸 4: 杂多酸在反相离子对色谱中的保留行为

本文研究了Keggin型杂多酸盐在四丁基铵-磷酸盐缓冲液-甲醇体系中的色谱保留行为。导出了反相离子对色谱中离子对试剂浓度, 强溶剂浓度及离子强度影响溶质保留值的三个规律式, 并用实验及文献值进行验证, 在所研究的体系中, 不同电荷数的杂多酸阴离子都可有保留, 通过调节适当的离子对试剂浓度及强溶剂浓度,可改善其选择性。

Research on heteropoly anions with chromatography. pt. 4: The retention behaviours of heteropoly anions in reversed-phase ion pair liquid chromatography

The chromatog. retention behavior of Keggin structure heteropoly anions was studied in systems with a mobile phase containing MeOH-phosphate buffer and Bu4N+ as the ion pair reagent. Three equations derived to describe the influence of ion pair reagent concentration, organic solvent content, and ionic strength in the mobile phase on the heteropoly anion retention were confirmed experimental All heteropoly anions with different charge nos. can be retained and their selectivity can be improved by varying the ion pair reagent concentration and the organic solvent content.