Articles | Volume 11, issue 5
https://doi.org/10.5194/amt-11-2821-2018
https://doi.org/10.5194/amt-11-2821-2018
Research article
 | 
14 May 2018
Research article |  | 14 May 2018

Folded tubular photometer for atmospheric measurements of NO2 and NO

John W. Birks, Peter C. Andersen, Craig J. Williford, Andrew A. Turnipseed, Stanley E. Strunk, Christine A. Ennis, and Erick Mattson

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Cited articles

Allen, C., Carrico, C., Gomez, S., Andersen, P., Turnipseed, A., Williford, C., Birks, J., Carrion, R., Gates, D., Macias, F., Rahn, T., Aiken, A., and Dubey, M.: NOx Instrument Intercomparison for Laboratory Biomass Burning Source Studies and Urban Ambient Measurements in Albuquerque, New Mexico, J. Air Waste Manage., in review, 2018. 
Arnott, W. P., Hamasha, K., Moosmüller, H., Sheridan, P. J., and Ogren, J. A.: Towards aerosol light-absorption measurements with a 7-wavelength aethalometer: Evaluation with a photoacoustic instrument and 3-wavelength nephelometer, Aerosol Sci. Tech., 39, 17–29, 2005. 
Beaver, M., Kronmiller, K., Duvall, R., Kaushik, S., Morphy, T., King, P., and Long, R.: Direct and indirect methods for the measurement of nitrogen dioxide (NO2), Presented at AWMA Measurements Meeting, Sacramento, CA, 20 November 2013. 
Bernard, F., Cazaunau, M., Grosselin, B., Zhou, B., Zheng, J., Liang, P., Zhang, Y., Ye, X., Daele, V., Mu, Y., Zhang, R., Chen, J., and Mellouki, A.: Measurements of nitrous acid (HONO) in urban area of Shanghai, China, Environ. Sci. Pollut. Res., 23, 5818–5829, 2016. 
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Short summary
A modular long-path folded tubular photometer for making absorbance measurements of air pollutant concentrations is described. The present paper applies this photometer to direct measurements of nitrogen dioxide and, indirectly, to nitric oxide. Excellent agreement for both was observed for measurements along an urban roadside compared with existing standard techniques. Advantages and extension of this technique to other atmospheric pollutants, including particulates, are discussed.
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