摘要
基于直接电流法检测非电活性气体ＣＯ２及Ｏ２干扰机理的研究，提出使用微电极并结合计算机控制的电位调制技术，发展建立了用于快速联合检测ＣＯ２和Ｏ２气体的调制电位脉冲库仑／电流法。一次测量时间快达４０ｍｓ，Ｏ２浓度检测范围不受限制，ＣＯ２分压在０～８０ｍｍＨｇ范围。通过编程设计特定的调制电位——时间波形，保持连续检测的长期稳定性。这一新的生物医学传感技术可用来无创、实时。
Based on the studies of the direct detection of electro inactive gas CO 2 by amperometry and the mechanism of oxygen interference,a new modulated potential pulse coulometry/amperometry (MPPC/MPPA),which combines the fast modulated potential technique with the microelectrode method,has been advanced and established for the rapid determination of both CO 2 and O 2.The influence of modulated potential time waveforms on the electrode activity,the accuracy and range of detection was investigated.Results were obtained which demonstrate that the novel biomedical sensor techniques can be used for the non invasive,real time and dynamic simultaneous monitoring of respiratory gases CO 2 and O 2
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
1998年第2期95-100,共6页
Journal of Biomedical Engineering
基金
国家自然科学基金
关键词
生物医学
传感技术
微电极
二氧化碳
氧
Biomedical sensor techniques
Modulated potential pulse coulometry/amperometry Microelectrode
Carbon dioxide
Oxygen
