Atmospheric Measurement Techniques
Atmospheric Measurement Techniques
AMT
Articles | Volume 11, issue 5
Articles | Volume 11, issue 5
https://doi.org/10.5194/amt-11-2821-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/amt-11-2821-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 11, issue 5
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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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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