• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>CHROMATOGRAPHY >Retention Behavior of Various Aromatic Compounds on Poly(butylene terephthalate) Stationary Phase in Liquid Chromatography
【24h】

Retention Behavior of Various Aromatic Compounds on Poly(butylene terephthalate) Stationary Phase in Liquid Chromatography

机译：各种芳族化合物对液相色谱法固定相的各种芳族化合物的保留行为

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Poly(butylene terephthalate)-coated silica (PBT) have been introduced as a stationary phase in liquid chromatography (LC) and the retention behavior of polycyclic aromatic compounds (PACs) was evaluated in reversed-phase LC. The trend for the retention was compared with that obtained on two types of commercially-available octadecylsilica (ODS) phases and phenylbutylsilica (PBS) phase. A good liner relationship between molecular size of planar PACs and the corresponding logarithmic retention factor was confirmed on the PBT stationary phase, and the trend is quite similar to that obtained on a conventional polymeric ODS stationary phase. In addition, a good molecular shape recognition capability of the PBT stationary phase was confirmed for several solute pairs consisted of planar and non-planar PACs with a similar two-dimensional molecular size. The selectivities to some planar/non-planar solute pairs on the PBT stationary phase were significantly better than conventional ODS phases, even when compared with that of typical polymeric ODS stationary phases operated in a similar experimental condition. In the case of structural isomers of dichlorobenzene and dibromobenzene, the elution order on the PBT stationary phase was o- , m- and p- , however the corresponding elution order in typical ODS phases, and PBS phase was different, o- , p- and m- . The results can be explained on the basis of the molecular-molecular interaction between the stationary phase ligand and the analyte molecule, because the PBT stationary phase has a similar partial chemical structure to these p- isomers on the silica support.
机译：已经将聚（丁二醇酯） - 涂层二氧化硅（PBT）作为液相色谱（LC）中的固定相引入，并在反相LC中评价多环芳族化合物（PAC）的保留行为。将保留的趋势与两种商业上可用的八二烷基硅（ODS）相和苯基丁基硅（PBS）相的相比进行了比较。在PBT固定相上确认了平面PACS的分子大小与相应对数保留因子之间的良好衬垫关系，并且趋势与在常规聚合物ODS固定相中获得的趋势非常相似。另外，对于几个溶质对，确认了PBT固定相的良好分子形状识别能力，包括具有相似的二维分子大小的平面和非平面植物组成。在PBT固定相对某些平面/非平面溶质对的选择性显着优于常规ODS阶段，即使与在类似的实验条件下操作的典型聚合物ODS固定相的相比，也显着优于常规ODS相。在二氯苯和二溴苯并的结构异构体的情况下，PBT固定相的洗脱顺序是典型的ODS阶段和PBS中的相应洗脱顺序相是不同的， O-， p-和 m-。结果可以基于固定相配体和分析物分子之间的分子分子相互作用来解释，因为PBT固定相对于这些在二氧化硅载体上具有类似的部分化学结构。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号