氧和二氧化碳是两种与生命过程息息相关的共存气体.我们先期研究建立的微电流法,采用非水电解质在气敏微电极和硅一体化薄膜微电极器件上常温直接检测CO_2,取得了满意的结果.但是,O_2的干扰难以消除.若要连续检测O_2和CO_2,则必须分次提取两者的响应信号,以致电极结构复杂,测量费时.而且,这类按Clark电极限流原理稳态工作的电化学传感器,其响应速度不可能跟上生物呼吸过程中O_2和CO_2气体分压的动态变化频率. Oxygen and carbon dioxide are two kinds of coexisting gases which are closely related to the life process.We first study the established micro-current method, using non-aqueous electrolyte in the gas-sensitive microelectrode and silicon integrated thin film microelectrode devices at room temperature direct detection of CO_2, and achieved satisfactory However, O 2 interference is difficult to eliminate.If continuous detection of O_2 and CO_2, you must extract the response signal of the two parts, so that the electrode structure is complex, time-consuming measurement. And, according to Clark current limiting principle of steady-state work Of the electrochemical sensor, its response speed can not keep up with the biological respiration process of O_2 and CO_2 gas partial pressure dynamic change frequency.