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1 引言毛细管区带电泳技术,不存在色谱分析中组分与固定相间的作用,从而可最大可能地保持体系中各易变形态的浓度和分布,使之用于元素的易变形态分析和不稳定络合体系稳定常数测定.使用“峰漂移法”的实验模型,在对一级络合体系的研究基础上,推广到多级逐步络合体系.该方法不是基于分离测定,而是通过缓冲液组分对各种形态物电泳淌度的影响,演算出n级逐步络合的不稳定络合体系的各级逐步络合平衡常数,从而求得各易变组分的浓度和分布.本文将该方法应用于乙酰丙酮与镁离子这种二级逐步络合的不稳定体系.
1 Introduction Capillary Zone Electrophoresis does not involve the interaction between components and stationary phases in chromatographic analysis, thus maximizing the concentration and distribution of the various modalities in the system for use in elemental morphological analysis and not Stable complex system stability constants determination.Using the “peak drift method” experimental model, based on the study of the first-order complex system, extended to a multi-step stepwise complex system. This method is not based on the separation of determination, but through the buffer Liquid composition on the electrophoretic mobility of various forms of objects, and then calculate the gradual complexation equilibrium constants at all levels of the unstable complexation system of n stepwise complexation to find the concentration and distribution of each variable component. This method is applied to a two-step, step-by-step complex system of acetylacetone and magnesium ions.