【摘要】 光声光谱气体检测技术是利用光声效应实现痕量气体检测的一项重要技术,具有高灵敏度、高选择性、零背景信号、可实时在线监测等优点,在环境监测、采矿冶金、能源电力、医疗卫生等领域发挥着至关重要的作用。考虑到气体检测应用环境的复杂性,实际的检测环境往往是多种组分气体同时存在且需要监测每种组分气体的含量,此时对多组分气体进行同时检测的技术就显得尤为重要。首先介绍了光声光谱气体检测技术的基本原理和特点,主要从光源和光声池的角度阐述了以光学复用方法为核心的光声光谱技术在多组分气体检测中的应用,并分析了石英增强光声光谱技术的特点及其在多组分气体检测中的应用,最后对光声光谱多组分气体检测技术的发展趋势进行了总结与展望。更多还原

【Abstract】 Photoacoustic spectroscopy gas detection technology is an important technology to realize trace gas detection by using photoacoustic effect. It has the advantages of high sensitivity, high selectivity, zero background signal and real-time online monitoring. It plays a vital role in the fields of environmental monitoring, mining and metallurgy, energy and electricity, medical and health care and so on. Considering the complexity of gas detection application environment, the actual detection environment is often the simultaneous existence of multiple component gases, and the content of each component gas needs to be monitored. At this time, the technology of simultaneous detection of multi-component gases is particularly important. This paper firstly introduces the basic principle and characteristics of photoacoustic spectroscopy gas detection technology and expounds on the application of photoacoustic spectroscopy technology with optical multiplexing method as the core in multi-component gas detection mainly from the perspective of the light source and photoacoustic cell, and analyzes the characteristics of quartz enhanced photoacoustic spectroscopy technology and its application in multi-component gas detection. Finally, the development trend of multi-component gas detection based on photoacoustic spectroscopy is summarized and prospected.更多还原