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研究了邻菲啰啉冠醚电极的响性特性，测定了邻菲啰啉冠醚络合物的相关萃取平衡常数，并研究了其与电极性能的关系．实验表明，当ＰＶＣ膜中无邻菲啰啉冠醚载体时，其与盐的脂溶性相关的平衡常数Ｋ_ｄ反映了电极的选择性：季铵＞伯胺＞叔胺＞仲胺＞铵．ＰＶＣ膜中邻菲啰啉冠醚载体化合物的引入，改变了电极的选择性次序：伯胺＞季铵＞叔胺＞仲胺＞铵，此时较能反映电极选择性次序的是萃取平衡常数Ｋ_ｅ而不是Ｋ_ｄ或络合物稳定常数Ｋ_ａ．
The properties of the phenanthroline crown ether electrode were investigated. The relative equilibrium constants of the extraction of the phenanthroline crown ether complex were determined, and their relationship with the electrode properties was also studied. Experiments show that when the phenanthroline crown ether carrier in the PVC film, its salt solubility associated with the equilibrium constant K_d reflects the electrode selectivity: quaternary ammonium> primary amine> tertiary amine> secondary amine> ammonium. The introduction of phenanthroline crown ether carrier compounds in PVC membranes changed the order of selectivity of the electrodes: primary amine> quaternary ammonium> tertiary amine> secondary amine> ammonium, and the order of electrode selectivity was better than that of the extraction equilibrium constant K_e instead of K_d or complex stability constant K_a.