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前文首次报导了以三庚基十二烷基季铵为活性物质的PVC膜BF_4~-根离子选择电极的研制及活性物质的制备和性质。为了进一步研究长碳链季铵化合物的结构与BF_4~-根离子选择电极的性能之关系,我们制备了一系列新的长碳链季铵化合物,观察了碳链长度和季铵离子的对称与不对称性结构跟电极的线性响应范围、检测下限和主要干扰离子的选择性系数的关系。实验试剂:1.四(十二烷基)碘化季铵,(C_(12)H_(25))_4NI,2.三辛基十六烷基碘化季铵,(C_8H_(17))_3NC_(16)H_(33)I,3,三辛基十二烷基碘化季铵(C_8H_(17))_3C_(12)H_(25)I,4.三庚基十二烷基碘化
For the first time reported the preparation of three-heptyl quaternary ammonium dodecyl quaternary ammonium PVC membrane BF_4 ~ - ion-selective electrode preparation and preparation of active substances and properties. In order to further study the relationship between the structure of long carbon chain quaternary ammonium compounds and the performance of BF_4 ~ - ion selective electrode, we prepared a series of new long carbon chain quaternary ammonium compounds, observed the carbon chain length and quaternary ammonium ion symmetry and The relationship between the asymmetry structure and the linear response range of the electrode, the detection limit and the selectivity coefficients of the major interfering ions. Experimental reagents: 1. Tetradecyl quaternary ammonium iodide, (C_ (12) H_ (25)) _4NI, 2. Trioctyl cetyl iodide quaternary ammonium, (C_8H_ (17)) _3NC_ (16) H_ (33) I, 3, trioctyl dodecyl quaternary ammonium iodide (C_8H_ (17)) _ 3C_ (12) H_ (25) I,