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本文报导了所研制的盐酸氟桂嗪离子选择性电极。基于不同的离子缔合物、含量及增塑剂对电极性能的影响,采用正交设计法来综合考察它们的交互作用,筛选了电极膜的组成,测试了电极的性能。结果表明:以盐酸氟桂嗪—四苯硼钠离子缔合物为活性物质,DBP或DOP为增塑剂制成的PVC膜电极的性能最佳。其响应范围为1.0×10~(-4)—5×10~(-3)mol/L,检测下限为3.5×10~(-5)mol/L,响应斜率为58mV/pC(25C),并且该电极稳定性较好,应用它对合成样品进行测定,取得了满意的结果,其平均回收率为99.2％。
This paper reports the developed flunarizine hydrochloride selective electrode. Based on the different ion association, content and the influence of plasticizer on the electrode performance, orthogonal design method was used to comprehensively investigate their interaction, the composition of the electrode membrane was screened and the performance of the electrode was tested. The results show that PVC membrane electrode made of DBP or DOP as plasticizer has the best performance with flunixin hydrochloride - tetraphenyl boron sodium ion association material as active material. The response range was 1.0 × 10 -4 -4 × 10 -3 mol / L, the detection limit was 3.5 × 10 -5 mol / L and the response slope was 58 mV / pC (25C) And the electrode stability is good, the application of it for the determination of synthetic samples, and achieved satisfactory results, the average recovery was 99.2%.