HU Wen-hui1, REN Xia1, MA Chang-qing1, et al. Development on micro-type coated wire electrode pH sensor[J]. 2007, (2): 73-75. DOI: 10.13873/j.1000-97872007.02.025.
微型涂丝膜pH传感器的研制
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
1
1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10 s。其针状结构在在体测量中应用方便。
Abstract
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 48mV/pH
good stability and reproducibility
relative standard deviation is within 2% and response time is within 10s.The syringe needle structure is convenient to be used to monitor in vivo.
A solid-state ionic-selective electrode with an ionic-electronic transducer for determining chlordiazepoxide [J] . I. P. Gorelov,S. S. Ryasenskii,S. V. Kartamyshev,M. V. Fedorova. Journal of Analytical Chemistry . 2005 (1)