| 测定逐级络合物稳定常数的等色点——平衡移动法 |
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| 引用本文： | 买光昕,宋立国,王淑仁,张庆森.测定逐级络合物稳定常数的等色点——平衡移动法[J].山东大学学报(理学版),1991(3). |
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| 作者姓名： | 买光昕 宋立国 王淑仁 张庆森 |
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| 作者单位： | 山东大学，山东大学，山东大学环境科学中心，山东大学环境科学中心 山东教育学院生化系，1985级硕士研究生 |
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| 基金项目： | 中国科学院自然科学基金 |
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| 摘 要： | 本文将平衡移动法应用于逐级络合物稳定常数的测定,对相互交错严重的逐级络合反应,利用计算机自动寻找严格的实验条件,使系列溶液吸收光谱形成等色点,以判断反应进程,从而将复杂的逐级平衡分解.方法简便可靠,实验条件严谨,用以测定经典的铁-磺基水杨酸体系,取得了满意的结果.
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| 关 键 词： | 稳定常数 等色点 平衡移动法 |
DETERMINATION OF THE STEPWISE STABILITY CONSTANTS OF COMPLEXES BY THE ISOSBESTIC POINTS-EQUILIBRIUM SHIFT METHOD |
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| Mai Guangxin,Song Liguo,Wang Shuren,Zhang Qingsen,Centre of Environment Science,Shandong University,Jinan.DETERMINATION OF THE STEPWISE STABILITY CONSTANTS OF COMPLEXES BY THE ISOSBESTIC POINTS-EQUILIBRIUM SHIFT METHOD[J].Journal of Shandong University,1991(3). |
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| Authors: | Mai Guangxin Song Liguo Wang Shuren Zhang Qingsen Centre of Environment Science Shandong University Jinan |
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| Abstract: | In this paper, the equilibrium shift method is developed to determine the step-wise stability constants of complexes. For stepwise complexing reactions, the over-lapping stepwise equilibria are resolved into single equilibria by using the characterist icsof isosbestic points which appear in the spectra of a series of solutions, then the equilibrijum shift method is used to process them. This method is reliable and con-venient, it is applied to iron(III)+sulfosalicylic acid system and satisfactory results are obtained. |
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| Keywords: | stability constants isosbestic points equilibrium shift method |
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