Egorova E M, Yakover L L, Svitova T F
A.N. Frumkin Institute of Electrochemistry of the AS of Russia, Moscow.
Biochim Biophys Acta. 1992 Aug 10;1109(1):1-6. doi: 10.1016/0005-2736(92)90180-t.
Lipid suspensions with a low polydispersity (delta = 0.15 +/- 0.05, as given by photon correlation spectroscopy (PCS)) were used to elucidate the origin of the disagreement between the experimental zeta potential values (zeta sm), obtained from the electrophoretic mobilities through the Smoluchowski equation, and double-layer theory prediction (zeta potential) at low salt concentrations. The values of zeta sm, measured for cardiolipin and phosphatidylserine suspensions in monovalent electrolytes, were compared with the correspondent theoretical values of the zeta potentials correlated for the relaxation effect; the correction was made according to the S.S. Dukhin theory of electrophoresis. It was found, that this correction eliminates the disagreement for cardiolipin in NaCl entirely; it partly solves the problem for cardiolipin in KCl but fails to improve the situation for phosphatidylserine in NaCl.
使用具有低多分散性的脂质悬浮液（通过光子相关光谱法（PCS）给出的δ = 0.15±0.05）来阐明在低盐浓度下，通过Smoluchowski方程从电泳迁移率获得的实验性ζ电位值（ζsm）与双层理论预测值（ζ电位）之间存在差异的原因。将在单价电解质中测量的心磷脂和磷脂酰丝氨酸悬浮液的ζsm值与考虑松弛效应的相应ζ电位理论值进行比较；根据S.S. Dukhin电泳理论进行校正。结果发现，这种校正完全消除了NaCl中心磷脂的差异；它部分解决了KCl中心磷脂的问题，但未能改善NaCl中磷脂酰丝氨酸的情况。
