某种离子传递的电荷与总电荷之比，称为离子迁移数。若两种离子迁移数传递的电荷分别为q+和q-，则通过的总电荷为：Q=q++q-，正、负离子的迁移数为：t+=q+/Q和t-=q-/Q，t++t-=1。离子迁移数可以直接测定，方法有希托夫法、界面移动法和电动势法等。
随着温度的升高，样品的离子迁移数增加。
The oxygen ion transport number of the samples increases with increasing temperature.
建立了一套电动势法测量电解质溶液中离子迁移数的实验装置。
A set of equipment was established for determining the transference Numbers of electrolyte solutions by EMF method.
介绍了用于测定理想聚合物电解质中离子迁移数的三种比较常用的电化学方法。
Three commonly used electrochemical methods for measurement of transference number in dilute, ideal polymer electrolyte is presented.
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