| 线性参数logI对反相液相色谱中的非极性小分子溶质体系的表征 |
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| 引用本文： | 耿信笃.线性参数logI对反相液相色谱中的非极性小分子溶质体系的表征[J].分析化学,1998,26(6):665-670. |
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| 作者姓名： | 耿信笃 |
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| 作者单位： | 西北大学现代分离科学研究所现代分离科学省重点实验室!西安710069，西北大学现代分离科学研究所现代分离科学省重点实验室!西安710069，西北大学现代分离科学研究所现代分离科学省重点实验室!西安710069，西北大学现代分离科学研究所现代分离科学省重点实验室!西安710069，西北大 |
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| 摘 要： | 从理论上阐明了计量置换平衡常数的对数ｌｏｇＫａ对液相色谱中计量置换保留模型的线性参数ｌｏｇＩ起着主导作用。ｌｏｇＩ表示溶质对固定相的亲合势，且具有热力学平衡常数的性质。
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| 关 键 词： | 液相色谱 计量置换 保留机理 参数 反相液相色谱 |
The Parameter logI for the Characterization of Small Non -polar Solute System in Reversed -phase Liquid Chromatography |
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| Geng Xindu,Shi Yali,Bian Liujiao,Bai Quan,Wei Yinmao,He Langchong.The Parameter logI for the Characterization of Small Non -polar Solute System in Reversed -phase Liquid Chromatography[J].Chinese Journal of Analytical Chemistry,1998,26(6):665-670. |
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| Authors: | Geng Xindu Shi Yali Bian Liujiao Bai Quan Wei Yinmao He Langchong |
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| Abstract: | It is theoretically elucidated that the logarithm of stoichiometric displacement equilibrium constant, logKa dominates the linear parameter logI of the stoichiometric displacement model for retention in liquid chromatography. The parameter logI denotes the affinity of solute to stationary phase and has the character of a thermodynamic equilibrium constant. This expectation was confirmed with the experiment from some of systems of non-polar small solutes in reversed phase liquid chromatography(RPLC). It was found that the logI might be used for the characterization for the characters of solute, mobile, and stationary phases in RPLC. A good linear relationship between logI and l/T (T, absolute temperature) was also tested with experiment. |
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| Keywords: | Liquid chromatography stoichiometric displacement retention mechanism characterization parameter |
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