PVC膜碘离子选择电极的制备及Hg^(2+)的测定

Preparation of Iodide Ion Selective Electrode Bases on PVC Membrane and the Determination of Hg^(2+)

提供了以乙基紫（EthylViolet）阳离子与碘离子的缔合物为电活性物质，以邻苯二甲酸二丁酯（DBP）为增塑剂的PVC膜碘离子选择电极的制备方法，并对电极的响应性能进行了测试．用正交试验法确定电极传感膜的最佳组成，并讨论了各因素对电极响应性能的影响．提出了检测Hg2＋的适宜条件和方法．

The preparation method of iodide ion selective electrode based on PVC membrane was presented,in which the ethyl violet iodide ion-pair was used as the electroactive material and dibutylphthalate as the plasticizer.The responsibility and the factors that affect the responsibility of the electrodewere discussed .The iodide ion selective electrode was used as a indication electrode,model 217 saturated calomel electrode as the reference electrode,to measure the contam of Hg2+. The suitable condition and method of the determination are presented and the factors that affect the determination are discussed.