界达电位(zeta potential)在胶体化学中,是指胶体粒子上累积的离子所引发的静电压;胶体粒子由电双层构成,包含固定层扩散层。一个粒子可以借由亨利公式Henry's function)导出电泳的移动率,进而求出其界达电位的值。

改进型盖伊-查普曼双电层模型以及径向电势分布曲线。

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