...
首页> 外文期刊>Journal of chromatography, A: Including electrophoresis and other separation methods >Evaluation of temperature and pressure effects on retention in supercritical fluid chromatography on polar stationary phases
【24h】

Evaluation of temperature and pressure effects on retention in supercritical fluid chromatography on polar stationary phases

机译:对极性静止相超临界流体色谱法潴留的温度和压力影响的评价

获取原文
获取原文并翻译 | 示例
           

摘要

Four polar stationary phases (ethylene-bridged hybrid silica, cyanopropyl, 2-ethylpyridine, and zwitterionic sulfobetaine) have been characterized in supercritical fluid chromatography (SFC) by linear free energy relationships (LFER) method with an extended set of Abraham's descriptors. Temperature (25-55 degrees C) and pressure (110-180 bar) effects on analyte retention, separation selectivity and LFER-coefficients of chromatographic systems have been studied using the 89 test compounds of various chemical classes and carbon dioxide - methanol (9:1 v/v) binary solvent as a mobile phase.
机译:通过线性自由能量关系(LEFE)方法具有延长的亚伯拉罕的描述符,在超临界流体色谱(SFC)中表征了四个极静止相(乙烯 - 桥接杂交二氧化硅,氰基丙基,2-乙基吡啶和两性离子磺基)。 温度(25-55摄氏度)和压力(110-180巴)对分析物保留的影响,使用各种化学类别和二氧化碳 - 甲醇的89次试验化合物研究了色谱系统的分离选择性和杠杆系数(9: 1 v / v)二元溶剂作为流动阶段。

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