Articles | Volume 10, issue 4
Atmos. Meas. Tech., 10, 1465–1479, 2017
https://doi.org/10.5194/amt-10-1465-2017
Atmos. Meas. Tech., 10, 1465–1479, 2017
https://doi.org/10.5194/amt-10-1465-2017

Research article 19 Apr 2017

Research article | 19 Apr 2017

Development of a portable cavity-enhanced absorption spectrometer for the measurement of ambient NO3 and N2O5: experimental setup, lab characterizations, and field applications in a polluted urban environment

Haichao Wang et al.

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Short summary
A new incoherent broadband cavity-enhanced absorption spectrometer for ambient NO3 and N2O5 detection is developed. This new instrument is featured with a mechanically aligned non-adjustable optical mounting system. Fast setup and stable running of this N2O5 spectrometer were successfully achieved during recent field campaigns in China due to this new feature. In addition, a dynamic reference spectrum is used for the CEAS type of instrument by NO titration for the first time.