空气质量监测的高灵敏差分吸收光谱学技术

High sensitive differential optical absorption spectroscopy (DOAS) for air quality monitoring

差分吸收光谱学技术以其多组份、高灵敏、连续实时在线的测量方式正成为空气质量监测的理想工具,是空气质量污染指标常规在线监测技术的发展方向。介绍了差分吸收光谱学技术的原理、关键技术以及所研制的空气质量自动监测系统。重点介绍了该项技术在环境空气质量自动在线监测中的应用。

The technique of the differential optical absorption spectroscopy (DOAS) provides an ideal tool for air quality monitoring with the advantages of multiple pollutant components, high sensitivity and continuous on-line measurement. Its operation principle and some key techniques are introduced together with the whole system for air quality monitoring. The applications of DOAS technique are also presented.