Zeta potentials in nonaqueous media: how to measure and control them
Zeta potentials in nonaqueous media: how to measure and control them
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DOI：
10.1016/s0927-7757(99)00273-3
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发表时间：
1999-12
期刊：
影响因子：
--
通讯作者：
M. Kosmulski
中科院分区：
文献类型：
--
作者：
M. Kosmulski
非水溶剂中微量水对 ze 电位的影响被高估了，而纯有机溶剂中杂质的作用常常被忽视。氧化物可以用作电位传感器来确定杂质的浓度和性质。即使在非常惰性的溶剂中，溶液中也必须存在反电荷。小离子通过自共轭和两亲性非离子化合物得到稳定。第二种电动现象在非水溶剂中更常见，并且它们在高场强下导致非常高的迁移率绝对值。
The effect of traces of water in nonaqueous solvents on the ζ-potential is overrated, and the role of impurities in presumably pure organic solvents is often overlooked. Oxides can serve as potentiometric sensors to determine the concentration and nature of impurities. Even in very inert solvents the countercharge in solution must exist. Small ions are stabilized by homoconjugation and by amphiphilic nonionic compounds. The electrokinetic phenomena of the second kind are more common in nonaqueous solvents and they lead to very high absolute values of mobility at high field strengths.