Differential optical absorption spectroscopy (DOAS) technique has been used to measure trace gases in the atmosphere by their strongly structured absorption of radiation in the UV and visible spectral range, e.g. SO_2, NO_2, O_3 etc.
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- 差分吸收光譜技術(shù)(differential optical absorption spectroscopy,DOAS)是利用氣體分子在紫外-可見(jiàn)光譜范圍的特征吸收來(lái)測量其濃度含量,如SO2,NO2,O3等。