【摘要】 本文用十二烯基丁二酸(DSA)改性氧化锆得到一种新的锆基质色谱固定相。改性前后的红外光谱的差异表明,DSA以两个羧基与氧化锆结合,由于多位点结合方式提高了固定相的稳定性,因此固定相可以在碱性(pH 8.5)条件下稳定使用。锆基质色谱固定相具有较强的疏水性,用于中性及碱性化合物的分离取得了满意的结果。更多还原

【Abstract】 A new zirconia-based stationary phase(DSAZ) is prepared for the first time by modification with dodecencylsuccinic acid(DSA).DSAZ is far more stable than stearic acid modified zirconia,because both of the carboxyl groups of DSA adsorb on zirconia with bidentate chelating mode,which has been identified by the FTIR spectrum of stationary phase.Hydrophobic interaction is the mainly retention mechanism for the stationary phase.Separations of PAHs and basic compounds are achieved with satisfaction.更多还原