近年来,文献报道了几种 Li~+、Cs~+ 等离子交换剂 PVC 膜电极.这类电极对离子的选择性除同活性物质本身的性质有关,还与介体溶剂的性质有关系.本文考察了不同介体溶剂的四苯硼酸盐 PVC 膜对碱金属离子的选择性,探讨了不同介体溶剂的膜对选择性的影响.所得结果有助于研制性能良好的碱金属离子选择电极. In recent years, several kinds of ion exchangers, such as Li ~ + and Cs ~ +, have been reported in the literature. The selectivity of these ions to ions is related to the nature of the active material itself and the nature of the mediator solvent. The selectivity of tetraphenylborate PVC membrane to alkali metal ions with different mediator solvents was investigated and the influence of different mediators on the selectivity of the membrane was discussed.The obtained results are helpful to develop a good performance alkali metal ion selective electrode .