Vocabulary concept

Concept URI		http://dd.eionet.europa.eu/vocabulary/aq/measurementmethod/DOAS
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Definition		In atmospheric chemistry, differential optical absorption spectroscopy (DOAS) is used to measure concentrations of trace gases. When combined with basic optical spectrometers such as prisms or diffraction gratings and automated, ground-based observation platforms, what we have is a cheap and powerful means for the measurement of such trace gas species as ozone and nitrogen dioxide.
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