Evaluation of the optimum composition of neutral-carrier membrane electrodes with incorporated cation-exchanger sites
Evaluation of the optimum composition of neutral-carrier membrane electrodes with incorporated cation-exchanger sites
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评估带有阳离子交换位点的中性载体膜电极的最佳组成
DOI：
10.1016/s0003-2670(00)85531-2
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发表时间：
1984
影响因子：
6.2
通讯作者：
W. Simon
中科院分区：
文献类型：
--
作者：
P. C. Meier;W. E. Morf;M. Läubli;W. Simon
测量了含有给定量的中性载体（ETH 1692）和不同量的添加剂四（对氯苯基）硼酸钾的膜电极的选择性。由添加剂引起的明显的选择性变化与理论模型一致。理论和实验都证实了膜的最佳组成是存在的。理想地，一价阳离子的传感器应仅含有少量的添加剂，而二价阳离子的传感器应含有约0.7的添加剂/载体摩尔比（对于1：2的阳离子/载体复合物）。还介绍了用于离子选择性电极数据的还原、评价和图形表示的新型台式计算机程序。
Selectivities were measured for membrane electrodes containing a given amount of a neutral carrier (ETH 1692) and varying amounts of the additive potassium tetrakis(p-chlorophenyl)borate. The pronounced selectivity changes induced by the additive agreed with a theoretical model. Both theory and experiment confirmed that an optimum composition of the membrane exists. Ideally, sensors for monovalent cations should contain only small amounts of the additive, whereas sensors for divalent cations should contain a molar ratio of additive/carrier of about 0.7 (for 1:2 cation/carrier complexes). Also described are the new desk-computer programs used for the reduction, evaluation, and graphical presentation of ion-selective electrode data.