Abstract

We report on the development of a low-cost and compact instrument for quantifying atmospheric NO2 concentrations by detecting NO2 fluorescence using a commercial light-emitting diode around 435nm as a fluorescence excitation light source. The minimum detectable limit of the NO2 instrument developed has been estimated to be 9.8 parts per billion of volume mixing ratio (ppbv) in a 60s integration time and with a signal-to-noise ratio of 2.

© 2010 Optical Society of America

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