| Investigation of Quantitative Relationship between Adsorbed Amount of Solute and Solvent Concentration at Relatively High Solute Con－centration by Frontal Analysis in RPLC |
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| 引用本文： | 王彦 耿信笃 ZEBOLSKY,DonM..Investigation of Quantitative Relationship between Adsorbed Amount of Solute and Solvent Concentration at Relatively High Solute Con－centration by Frontal Analysis in RPLC[J].中国化学,2003,21(10):1339-1343. |
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| 作者姓名： | 王彦 耿信笃 ZEBOLSKY DonM. |
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| 作者单位： | [1]InstituteofModernSeparationScience,ProvinceKeyLaboratoryofModernSeparationScience,NorthwestUniversity,Xi‘an,Shaanxi710069,China [2]DepartmentofChemistry,CreightonUniversity,Omaha68178-0104,USA |
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| 摘 要： | In previous paper a new adsorption isotherm which relates the amount of solute absorbed to the solvent concentration is pro-posed and simplified, and it only can be used at lower solute concentration. In this article the scope of the new adsorption isotherm is extended and the expressions with three and four parameters are obtained. The equations with multi-parameters are valid when the adsorbed mounts are larger and show non-linear logarithmic relationships. Tests with a homologue of are-matic alcohols by frontal analysis in reversed phase liquid chro-matography demonstrate that the experimental results fit those equations well. In addition, the predicted values by the multi-parameters were found to fit the experimental values well also. The parameters have physical meaning only for the two-param-eter equation for the aromatic alcohols.
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| 关 键 词： | 固液吸附 定量关系 溶液浓度 化学计量 吸附等温线 反向流体 苯酚 分析 |
Investigation of quantitative relationship between adsorbed amount of solute and solvent concentration at relatively high solute concentration by frontal analysis in RPLC |
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| Yan Wang,Xin‐Du Geng,Don M. Zebolsky.Investigation of quantitative relationship between adsorbed amount of solute and solvent concentration at relatively high solute concentration by frontal analysis in RPLC[J].Chinese Journal of Chemistry,2003,21(10):1339-1343. |
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| Authors: | Yan Wang Xin‐Du Geng Don M Zebolsky |
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| Abstract: | In previous paper a new adsorption isotherm which relates the amount of solute absorbed to the solvent concentration is proposed and simplified, and it only can be used at lower solute concentration. In this article the scope of the new adsorption isotherm is extended and the expressions with three and four parameters are obtained. The equations with multi‐parameters are valid when the adsorbed amounts are larger and show nonlinear logarithmic relationships. Tests with a homologue of aromatic alcohols by frontal analysis in reversed phase liquid chromatography demonstrate that the experimental results fit those equations well. In addition, the predicted values by the multiparameters were found to fit the experimental values well also. The parameters have physical meaning only for the two‐parameter equation for the aromatic alcohols. |
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| Keywords: | solid‐liquid adsorption solvent concentration stoichiometric displacement adsorption isotherm reversed phase liquid chromatography frontal analysis phenyl alcohol |
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