双层膜固态磷酸根离子选择电极研究  

Research on solid state phosphate anion-selective electrode with double membrane

作　　者：李琳娜[1] 姜涛钦 杨慧中[1] 

机构地区：[1]江南大学轻工过程先进控制重点实验室,江苏无锡214122

出　　处：《传感器与微系统》2016年第1期43-45,48,共4页Transducer and Microsystem Technologies

基　　金：江苏省环保科研课题(2012051);江苏省产学研前瞻性联合研究项目(BY2012070)

摘　　要：研究了一种以玻碳为基底电极,掺杂钴—氧化钴的聚苯胺为中间体,层状镁铝复合金属氧化物PVC膜为敏感膜,具有双层膜结构的固态磷酸根离子选择电极。该电极的检测磷酸二氢根的线性范围在10^(-1)~10^(-4)mol/L之间,响应斜率为-32.3 m V/dec,检测下限为7.65×10^(-5)mol/L,电极响应时间较快,且具有较强的稳定性和抗干扰能力。A phosphate ion-selective electrode, which is based on glassy carbon electrode as basal electrode, polyaniline doped cobalt ions as transducer layer, and layered Mg/A1 complex metallic oxide PVC membrane as sensitive memberance, double solid state phosphate anion seleetion electrode with double membrane is studied. The results show that the electrode has a linear potential response at concentration range of 10^-1- 10^-4 tool/L, with a slope of -32.3 mV/dec and a detection limit of 7.65 × 10^-5 mol/L, it has short response time, good stability and capacity of resisting disturbance.

关 键 词：磷酸根 镁铝复合金属氧化物 聚苯胺 

分 类 号：TP212.2[自动化与计算机技术—检测技术与自动化装置]