| 氨基酸与铬（Ⅲ）的络合反应热力学性质研究 |
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| 引用本文： | 冯先华 何有节. 氨基酸与铬（Ⅲ）的络合反应热力学性质研究[J]. 湖北大学学报(自然科学版), 1993, 15(2): 167-170 |
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| 作者姓名： | 冯先华 何有节 |
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| 作者单位： | 湖北大学(冯先华)，成都科技大学(何有节)，成都科技大学(朱正和) |
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| 摘 要： | 采用pH电位滴定法研究了甘氨酸、谷氨酸和天冬氨酸与铬(Ⅲ)的络合反应热力学性质。结果表明:这三种氨基酸与铬(Ⅲ)的络合反应均为吸热反应,反应热焓大小顺序为谷氨酸>天冬氨酸>甘氨酸。并结合自由能变化、熵变和络合物稳定性差异对络合反应机理进行了探讨。
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| 关 键 词： | 氨基酸 铬 络合反应 热力学 |
STUDY ON THE THERMODYNAMIC PROPERTIES OF COMPLEX REACTIONS OF AMINOACIDS WITH CHROMIUM ( III ) |
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| Feng Xianhua. STUDY ON THE THERMODYNAMIC PROPERTIES OF COMPLEX REACTIONS OF AMINOACIDS WITH CHROMIUM ( III )[J]. Journal of Hubei University(Natural Science Edition), 1993, 15(2): 167-170 |
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| Authors: | Feng Xianhua |
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| Affiliation: | Feng Xianhua(Hubei University)He Youjie Zhu Zhenghe(Chengdu University of Science and Technology) |
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| Abstract: | Some thermodynamic properties of complex reactions of Cr( III )with glycine,glu-tamic acid and asparic acid have been studied by pH-titration method. The results showed that all these complex reactions were endothermic. The enthalpy change increased in the order Glu> Asp>Gly. In addition-the complex mechanism has been discussed by free -energy change., entropy change and the difference among stabilities of complexes. |
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| Keywords: | Aminoacid Chromium Complex reaction Thermodynamic property |
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