Abstract: Gas biosensors are sensors based on biometrics, biotransformation, and gas signal output. It constructs a gas production system with “enzyme”, using gas concentration meter, barometer, pH meter to detect gas concentration value, barometric pressure value, pH value, and observe the color change by visual observation to establish a relationship between concentration, pressure, pH, color and target material to achieve rapid, accurate and sensitive quantitative and qualitative detection of target substances. This paper introduced the properties of gas biosensors, summarized the classification of gas biosensors, and also summarized the signal recognition principle and signal output mode of gas biosensors. The sensing materials and construction methods of gas biosensors were prospected.

Key words: gas biosensor, enzyme, signal recognition, gas concentration, gas pressure, pH, color

摘要： 气体生物传感器是基于生物识别、生物转化及气体信号输出的传感器。它通过“酶”构建产气体系，利用气体浓度仪、气压仪、pH计检测气体浓度值、气压值、pH，并通过数值或肉眼观察颜色变化后建立分析浓度、气压、pH、颜色与靶物质间的关系，从而实现对靶物质的快速、准确、灵敏地定性定量检测。介绍了气体生物传感器的性质，总结了气体生物传感器的分类，综述了气体生物传感器的信号识别原理和信号输出方式，并对气体生物传感器的传感材料、搭建方式提出了展望。

关键词: 气体生物传感器, 酶, 信号识别, 气体浓度, 气压, pH, 颜色