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NO2 Concentration Measurements in an Urban Atmosphere Using Differential Absorption Techniques

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Abstract

NO2 absorption coefficients for the most prominent argon–ion laser lines have been measured. A technique for measurement of NO2 concentration in an urban atmosphere in real time is described. Preliminary results using the differential absorption of argon–ion laser lines by NO2 in an urban (Atlanta, Georgia) atmosphere are presented. A simplified detection system using the differential absorption is proposed.

© 1974 Optical Society of America

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