微型涂丝膜pH传感器的研制  

Development on micro-type coated wire electrode pH sensor

作　　者：胡文慧[1] 任霞[1] 马长清[1] 任恕[2] 黄光英[3] 

机构地区：[1]华中科技大学同济医学院药学院,湖北武汉430030 [2]华中科技大学同济医学院公共卫生学院,湖北武汉430030 [3]同济医院中西医结合研究所,湖北武汉430030

出　　处：《传感器与微系统》2007年第2期73-75,共3页Transducer and Microsystem Technologies

基　　金：国家自然科学基金重大研究计划资助项目(90209009)

摘　　要：制备一种可供活体测量的针状微型pH传感器。以高纯度Pt丝为基体，PVC为载体，α-萘胺为活性物质，THF为溶剂制成涂丝H^＋离子选择性电极。该电极在pH=2～11范围内成良好的线性响应，平均响应斜率为48mV／pH，抗干扰能力强，相对标准偏差在2％以内，响应时间小于10s。其针状结构在在体测量中应用方便。A syringe needle pH sensor for in vivo measurement is studied. The H^＋ ion-selective coated wire electrode is made of the matrix of simple metal, the carrier of PVC, the active substance of α-naphthylamine and solvent of THF. The electrode possesses a wide linear pH response range form 2 to 11, average slope of 48 mV/pH, good stability and reproducibility, relative standard deviation is within 2 % and response time is within 10 s. The syringe needle structure is convenient to be used to monitor in vivo.

关 键 词：PH电极 Α-萘胺 涂丝电极 传感器 

分 类 号：O657.1[理学—分析化学]