As a monitoring technique with spectroscopy, the differential optical absorption spectroscopy technique(DOAS)uses the narrow molecular absorption bands to identify trace gases and their absorption strength to retrieve concentrations of the trace gases.
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- 差分吸收光譜技術(shù)(DOAS:DifferentialOpticalAbsorptionSpectroscopy)是一種光譜監測技術(shù),其基本原理就是利用空氣中的氣體分子的窄帶吸收特性來(lái)鑒別氣體成分,并根據窄帶吸收強度來(lái)推演出微量氣體的濃度。
