基于沉金电极修饰醛氧化酶的甲醛气体传感器  

Analdehyde oxidase modified gold electrode based formaldehyde gas sensor

作　　者：高广恒[1] 毕春元[2] 朱思荣[2] 周万里[2] 赵晓华[2] 张利群[1] 史建国[2] 

机构地区：[1]山东省科学院中日友好生物技术研究中心,山东省生物传感器重点实验室,山东济南250014 [2]山东省科学院生物研究所,山东济南250014

出　　处：《山东科学》2015年第1期43-46,共4页Shandong Science

基　　金：山东省科技发展计划项目(2014GSF121023)

摘　　要：本文设计了一种基于醛氧化酶原理来检测甲醛的气体传感器,该传感器的敏感元件以沉金电极为基底经过自组装、活化、吸附等工艺制作而成,对甲醛有较好的电催化氧化作用。利用该电极,以LPC1788为处理核心设计了一套生物传感器甲醛气体检测装置。利用0.1 mg/m3的甲醛气体对传感器进行测试,结果表明传感器对甲醛响应时间为20 s、恢复时间短,检测下限为0.01 mg/m3。We designed a formaldehyde gas detection sensor based on the aldehyde oxidase principle. Its sensitive component was manufactured through such process as self-assembly, activation, and adsorption with gold electrode as substrate, and had better electro-catalysis and oxidation effect to formaldehyde. We further designed a formaldehyde gas detection biosensor with the electrode and a LPC1788 chip as its CPU. The biosensor was tested with formaldehyde gas of 0. 1mg/m^3. Results demonstrate that the sensor has as rapid response time as 20 s, shorter recovery time and lower detection limit as 0. 01 mg/m^3 to formaldehyde gas.

关 键 词：醛氧化酶 沉金电极 生物传感器 LPC1788 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]