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本文以四种阴离子缔合剂与苯海拉明形成的离子缔合物作电活性材料,制成了苯海拉明PVC电极,并就各阴离子缔合剂、介体溶剂以及膜相中活性物质的含量对电极性能的影响作了较详细的研究.确定以四苯硼酸作配合剂,邻苯二甲酸二丁酯作介体溶剂,取活性物质含量为0.5%时,电极性能较优.电极响应的线性区为1×10~-1-3.2×10~(-6)M,斜率可达60mv/△pc, pH范围为2.5-5.5.电极的抗干扰能力较强,响应快,重现性和稳定性好.初步应用表明,电极用于苯海拉明的样品分析是非常适宜的.
In this paper, four kinds of anionic associative agent and diphenhydramine formed ion-association material as the electroactive material, made of diphenhydramine PVC electrode, and for each anionic associative agent, the mediator solvent and the active substance in the membrane phase Content of the performance of the electrode made a more detailed study to determine the use of tetraphenylborate as a complexing agent, dibutyl phthalate as a mediator solvent, take the active substance content of 0.5%, the electrode performance is better electrode response The linear range is 1 × 10 ~ -1-3.2 × 10 ~ (-6) M, the slope is up to 60mv / △ pc and the pH range is 2.5-5.5. The electrode has strong anti-interference ability, fast response and reproducibility And good stability. Preliminary application shows that the electrode for diphenhydramine sample analysis is very suitable.