【摘要】 以邻苯二甲酸二丁酯为介体溶剂,四苯硼酸-普鲁卡因为活性物质,制成了碳糊普鲁卡因选择性电极。该电极的线性范围在1.0×10^-1～3.0×10^-5mol/L间,平均斜率为56mV/pC,检测下限1.0×10^-5mol/L,连续测定4h,电位值变化±1mV,与PVC膜普鲁卡因选择性电极比较,具有较小的电极内阻。更多还原

【Abstract】 Using procaine-tetraphenylborate as active material and dibutyl phthalate as medium, a procaine carbon paste selective electrode was prepared. The electrode shows Nernstian ranging from 1.0×10^-1 to 3.0×10^-5mol/L with an average slope of 56mV/pC, and the limit of detection is 1.0×10^-5mol/L. With successive determination of 4 hours, the potential varies about ±1mV. Comparing with procaine PVC membrane selective electrode, the carbon paste electrode has lower resistance.更多还原