A novel rotated disc electrode and time lag method for characterizing mass transport in liquid‐membrane systems
A novel rotated disc electrode and time lag method for characterizing mass transport in liquid‐membrane systems
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一种新颖的旋转圆盘电极和时滞方法，用于表征液膜系统中的质量传递
DOI：
10.1002/aic.690260617
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发表时间：
1980
期刊：
影响因子：
3.7
通讯作者：
J. Leypoldt
中科院分区：
文献类型：
--
作者：
D. Gough;J. Leypoldt
描述了一种用于膜覆盖的旋转圆盘电极的时间滞后方法，该方法允许从单次测量中确定亲水凝胶膜中小分子的分配和扩散率以及膜渗透率。这种新技术考虑了靠近膜的溶液中的浓度边界层和溶质在电极表面的反应是扩散或动力学限制的。给出了用这种方法表征以氧、对苯二酚、亚铁氰化物和葡萄糖为溶质的商业纤维素膜中的传质的例子。
A time lag method is described for use with a membrane-covered, rotated disc electrode that allows determination of the partitioning and diffusivity of small molecules in hydrophilic gel membranes and membrane permeability from a single measurement. This new technique takes into account the concentration boundary layer in the solution adjacent to the membrane and reaction at the electrode surface of solutes that are diffusion- or kinetic-limited. Examples are given of the use of this method for characterizing mass transfer in a commercial cellulosic membrane with oxygen, hydroquinone, ferrocyanide, and glucose as solutes.