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根据Ｄｅｌｍｈｏｌｔｚ－Ｓｍｏｌｕｃｈｏｗｓｋｉ方程，由实验测定的流动电位来计算ＭＦ膜的ζ电位；并根据 Ｇｏｕｙ－Ｃｈａｐｍａｎｎ方程，原估算出膜的微孔表面电荷密度。表明膜微孔表面ζ电位和电行密度与电解质 的种类、浓度有关．ＮａＣｌ、 ＫＣｌ和Ｎａ２ＳＯ４体系的ζ电位相近，ＭｇＣｌ２与 ＭｇＳＯ４体系的ζ电位相近，即阳 离子价态和结构越相近，ζ电位越相近，但当阴离子价态较高时，也有一定影响，由膜微孔表面ζ电位和 电荷密度与溶液浓度的变化关系可知．在低浓度区域，膜表面ζ电位和电行密度较高，并出现１个峰值， 之后随浓度增大而缓慢降低。
According to the Delmholtz-Smoluchowski equation, the zeta potential of the MF membrane was calculated from the experimentally determined flow potentials. The surface charge density of the membrane was estimated based on the Gouy-Chapmann equation. The results showed that the ζ potential and the line density of the membrane pore surface were related to the type and concentration of electrolyte. The ζ potentials of NaCl, KCl and Na2SO4 systems are similar. The similar ζ potentials of MgCl2 and MgSO4 system, that is, the closer the valence states and structures of the cation are, the closer the zeta potential is. However, when the valency of anion is higher, The relationship between the zeta potential and charge density on the surface of the pore and the change of solution concentration is known. In the low concentration region, the ζ potential and the line density of the membrane surface are higher, and a peak appears, then slowly decreases with increasing concentration.