用石墨作内部接触制备了一种通用PVC膜电极,可用于某些药物的分析测定。PVC膜用十六烷基三辛基碘化铵作定域体,并用邻苯二甲酸二丁酯作溶剂介体,测定某一药物时,用相应药物的溶液活化电极。报道了电极对苯巴比妥,硫喷妥,异戊巴比妥、苯妥英、利尿酸及水杨酸的电位响应特性及最佳pH与浓度区间。用该电极测定上述药物获得了较好的回收率。 A universal PVC membrane electrode was prepared by internal contact with graphite, which can be used for the analysis and determination of some drugs. PVC membrane cetyltrioctylammonium iodide as a fixed body, and with dibutyl phthalate as a solvent mediator, when measuring a drug, the corresponding drug solution activated electrode. The potential response characteristics of phenobarbital, thiopental, amobarbital, phenytoin, diuretic and salicylic acid and the optimal pH and concentration intervals were reported. The determination of the above electrode with the electrode gave better recovery.