长光程差分吸收光谱法

Long-path Differential Optical Absorption Spectroscopy for Air Pollution Monitoring

长光程差分吸收光谱法是一种实时、在线监测方法 ,可同时对多种气体进行连续监测。使用这种方法获得的数据经计算机处理后 ,可分析出大气中各种污染物的含量。介绍了这种方法的基本原理、仪器结构及它的应用。

Differential optical absorption spectroscopy (DOAS) has been developed since the late 70s. This paper reviews commercial DOAS systems for real-time and on-line atmospheric pollution monitoring, describing the basic theory, device structure as well as applications.