STUDY OF CONCENTRATION RETRIEVING METHOD IN DIFFERENTIAL OPTICAL ABSORPTION SPECTROSCOPY FOR MEASURING AIR POLLUTANTS
差分吸收光谱法测量大气污染的浓度反演方法研究

The principle of differential optical absorption spectroscopy (DOAS) for measuring the concentration of air pollutants is presented. The adjustment of measured spectra and the least-squares method are also described .We have been using this method in retrieving the concentration of air pollutants and measuring the air pollutants for a long time and the results were coincident with circumstances. This method was proved very suitable for retrieving the concentration of air pollutants in DOAS system and provides a good technique for environmental monitoring.