| 酪氨酸在活性炭/水界面上的吸附 |
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| 引用本文： | 赵振国,金明钟,刘迎清. 酪氨酸在活性炭/水界面上的吸附[J]. 高等学校化学学报, 2000, 21(12): 1904-1907 |
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| 作者姓名： | 赵振国 金明钟 刘迎清 |
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| 作者单位： | 北京大学化学与分子工程学院, 北京 100871 |
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| 摘 要： | 研究了不同pH值介质中酪氨酸在活性炭上的吸附行为.结果表明,pH值4.2～6.1时吸附量较大,在酪氨酸的等电点时吸附量最大;酪氨酸被吸附的主要形式是兼性离子;酪氨酸离子靠VanderWaals力吸附在活性炭/水界面上.用介质pH值对酪氨酸溶解度的影响和活性炭的表面性质解释了实验结果
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| 关 键 词： | 酪氨酸 固液界面吸附 活性炭 |
| 收稿时间： | 1999-12-08 |
Adsorption of Tyrosine on Active Carbon/Water Interface |
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| ZHAO Zhen Guo ,JIN Ming Zhong,LIU Ying Qing. Adsorption of Tyrosine on Active Carbon/Water Interface[J]. Chemical Research In Chinese Universities, 2000, 21(12): 1904-1907 |
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| Authors: | ZHAO Zhen Guo JIN Ming Zhong LIU Ying Qing |
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| Affiliation: | Department of Chemistry, Peking University, Beijing 100871, China |
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| Abstract: | The adsorption of tyrosine from aqueous solution on the active carbon at varying pHvalues has been studied.The results indicate that: (1) the adsorption found to be pHdependent,within pH2-4 it increases with pH, within pH6-12 it decreases with pH, at pH4.2-6.1 the adsorption reaches its maximum; (2) the tyrosine is adsorbed mainly in the form of zwitterion; (3) a certain amount of ions of tyrosine is also adsorbed with van der Waals interaction.These probably suggest that the solubility of tyrosine at IEPhas minimum,and the ions and undissociated groups of tyrosine can be adsorbed on the surface of active carbon through van der Waals interaction. |
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| Keywords: | Tyrosine Adsorption on solid/liquid interface Active carbon |
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