Numerous studies on electrical potential of particles have proven its wide range of applications in areas such as electrochemistry, geophysics, and hydrology. Because most researchers have only focused on single-type mineral particles, our knowledge about zeta potential is extremely limited, despite the fact that most natural rocks are mixtures of different pure minerals.

In this research, we investigated the zeta potential of mixed samples, made of two pure components with different surface potentials. The ultimate goal is to measure the zeta potential of mixed minerals, existing on different surfaces, and subsequently to evaluate the effect of permeability (capillary radius) on the measured zeta of single-type particles.

The analysis of the obtained results from the samples, made of two different minerals, suggests that there is a linear relationship between zeta potential and the overall area of single-type particles. Furthermore, it indicates that the absolute values of zeta potential, existing in samples of similar types and different sizes, change linearly by varying permeability. Eventually, a simple model is proposed to predict the overall zeta potential based on each component’s zeta. The predictability of the model is also evaluated by conducting a stream potential experiment on porous media of different sizes and types. The model is properly able to predict zeta potential of different mixtures based on the average of surface area and permeability changes.

大量有关粒子电势的研究证明了其在电化学，地球物理学和水文学等领域的广泛应用。由于大多数研究人员只专注于单一类型的矿物颗粒，因此尽管大多数天然岩石是不同纯矿物的混合物，但我们对zeta电位的了解极为有限。

在这项研究中，我们研究了混合样品的zeta电位，该样品由两种具有不同表面电位的纯组分制成。最终目标是测量存在于不同表面上的混合矿物的zeta电位，然后评估磁导率（毛细管半径）对单类型颗粒的zeta测量值的影响。

对由两种不同矿物制成的样品获得的结果进行的分析表明，ζ电位与单一类型颗粒的总面积之间存在线性关系。此外，它表明存在于相似类型和不同大小的样本中的zeta电位的绝对值会通过改变磁导率而线性变化。最终，提出了一个简单的模型来基于每个组件的Zeta预测整体Zeta电位。该模型的可预测性还可以通过对不同大小和类型的多孔介质进行流电势实验来评估。该模型能够根据表面积和渗透率变化的平均值正确预测不同混合物的ζ电势。