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| Experimental investigations on validity of moving chemical reaction boundary equation for the strong acid -weak base system with an excess of potassium chloride | |
| 作者姓名： | ZHOU Shulin CAO Chengxi QIAN Yitai HE Youzhao YANG Li Qu Qishu CHEN Wenkui |
| 作者单位： | Institute of Allergy Reserch, Wannan Medical College, Wuhu 241001, China,School of Life Science and Technology, Shanghai Jiaotong University, Shanghai 200030, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China,Department of Chemistry, University of Science and Technology of China, Hefei 230026, China,Department of Chemistry, University of Science and Technology of China, Hefei 230026, China,Department of Chemistry, University of Science and Technology of China, Hefei 230026, China,Department of Chemistry, University of Science and Technology of China, Hefei 230026, China,Institute of Allergy Reserch, Wannan Medical College, Wuhu 241001, China |
| 基金项目： | Supported by the National Natural Science Foundation of China (Grant No. 29775014) and by the Scientific Foundation of the Chinese Health Committee (Grant No. 98-2-334) |
| 摘 要： | A moving chemical reaction boundary (MCRB) is formed by the weak alkali NH3*H2O and strong acid HCl with an excess of potassium chloride as background electrolyte. The experimental results are compared with the predictions in accordance with the moving chemical reaction boundary equation (MCRBE). If the MCRB is cathodic, the experimental results are in agreement with the predictions by the MCRBE. However, if the MCRB is anodic, the experimental results significantly deviate from the predictions of the MCRBE. A corrected MCRB equation is proposed for such conditions. The findings are evidently different from those in our early reports(J. Chromatogr. A, 891 (2000): 337～347; 907 (2001): 347～352; 922 (2001) 283～393). This study is of obvious benefit to capillary electrophoresis and isoelectric focusing. |
| 关 键 词： | electromigration isoelectric focusing moving boundary system moving chemical reaction boundary |
Experimental investigations on validity of moving chemical reaction boundary equation for the strong acid -weak base system with an excess of potassium chloride |
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| ZHOU Shulin,CAO Chengxi,QIAN Yitai,HE Youzhao,YANG Li,Qu Qishu,CHEN Wenkui.Experimental investigations on validity of moving chemical reaction boundary equation for the strong acid -weak base system with an excess of potassium chloride[J].Progress in Natural Science,2002,12(9):667-672. | |
| Authors: | Zhou Shulin Cao Chengxi QIAN Yitai He Youzhao YANG Li Qu Qishu CHEN Wenkui |
| Institution: | 1. Institute of Allergy Reserch, Wannan Medical College, Wuhu 241001, China 2. School of Life Science and Technology, Shanghai Jiaotong University, Shanghai 200030, China;Department of Chemistry, University of Science and Technology of China, Hefei 230026, China 3. Department of Chemistry, University of Science and Technology of China, Hefei 230026, China |
| Abstract: | A moving chemical reaction boundary (MCRB) is formed by the weak alkali NH3*H2O and strong acid HCl with an excess of potassium chloride as background electrolyte. The experimental results are compared with the predictions in accordance with the moving chemical reaction boundary equation (MCRBE). If the MCRB is cathodic, the experimental results are in agreement with the predictions by the MCRBE. However, if the MCRB is anodic, the experimental results significantly deviate from the predictions of the MCRBE. A corrected MCRB equation is proposed for such conditions. The findings are evidently different from those in our early reports(J. Chromatogr. A, 891 (2000): 337～347; 907 (2001): 347～352; 922 (2001) 283～393). This study is of obvious benefit to capillary electrophoresis and isoelectric focusing. |
| Keywords: | electromigration isoelectric focusing moving boundary system moving chemical reaction boundary |
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