条件运行对水友相互作用色谱重复性的影响及其作为在线全面的二维液态色谱中的第二维应用
Clémence Gély1, Yoan R Monneau1, Maggy Hologne1
1Universite Claude Bernard Lyon1, ISA, UMR5280, CNRS, Villeurbanne, France.
Journal of separation science
|May 27, 2024
概括
在水友交互色谱 (HILIC) 中实现稳定的保留时间,用于在线全面的二维液体色谱 (LC×LC),需要特定的调节周期. 这项研究发现,作为第二个维度,五次调节运行确保了HILIC的特殊保留时间稳定性.
科学领域:
- 分析化学 分析化学
- 染色体学 染色体学 是一种染色学.
背景情况:
- 二维液态色谱 (LC×LC) 配对不同的分离模式以提高分辨率.
- 逆相液态染色学 (RPLC) 随后的水友相互作用染色学 (HILIC) 对极性化合物是有效的.
- 在第二个维度中的HILIC是有利的,因为它含有高的酸,改善了质谱检测.
研究的目的:
- 调查HILIC作为LC×LC中的第二维的可重复性.
- 为了确定稳定的HILIC保留时间的最佳条件循环数.
- 应用优化的RPLC×HILIC方法来分析氨酸凝消化剂.
主要方法:
- 在短时间和的坡度下 (高达8%),研究了HILIC柱平衡.
- 从第一维 (RPLC) 中研究了注射量和溶剂成分的影响.
- 确定了第二维中可重复的保留时间所需的调节周期数.
主要成果:
- 在不影响保留时间稳定性的情况下,HILIC可以快速实现部分平衡.
- 为了保持稳定的保留时间,需要特定数量的调节周期.
- 一个RPLC×HILIC方法与五个调节运行证明了在二维保留时间的特殊稳定性.
结论:
- 量身定制的调节运行对于LC×LC中可靠的HILIC性能至关重要.
- 优化的RPLC×HILIC方法适用于分析复杂的生物样本,如氨酸凝消化剂.
- 这种方法增强了在线综合二维染色学用于极性分析物分离的稳定性.
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