冠醚配合物的研究(ⅩⅠⅤ)——2,3-苯并-11-甲基-18-冠-6液膜模拟细胞膜传输钾离子的研究

Studies on Crown Ether Coordination Compounds (ⅩⅣ)——The Transport of Potassium Ions by 2,3-Benzo-11-Methyl-18-Crown-6 Liquid-Membrane-Mimicking Cell Membranes

以2,3-苯并-11-甲基-18-冠-6(BCl-18C6)为液膜载体研究其对钾离子的传输,金属离子可以逆其浓度梯度进行跨膜传输。当源相金属离子浓度和膜相载体浓度相近时,传输为串联一级反应,传输速率正比于源相及受相阴、阳离子浓度乘积之差。同时讨论了搅拌速度对传输的影响,探讨了传输机理。

Liquid membranes containing 2,3-benzo-ll-methyl-18-crown-6(BCl-18C6) is able to transport metal ions against their concentration gradient. The migration of metal ions is a consecutive first order process when the concentrations of metal ions in source phase and of carriers in membrane phase are comparable, the transport rate is proportional to the difference between the product of cation and anion concentrations in source phase and that in receiving phase. The influence of stirring rate on the transport mechanism was considered.