Articles | Volume 11, issue 8
https://doi.org/10.5194/amt-11-4797-2018
https://doi.org/10.5194/amt-11-4797-2018
Research article
 | 
16 Aug 2018
Research article |  | 16 Aug 2018

Portable ozone calibration source independent of changes in temperature, pressure and humidity for research and regulatory applications

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

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Short summary
A highly portable ozone calibration source based on the photolysis of oxygen is described and evaluated. The ozone mixing ratio produced is independent of both pressure and temperature, and humidity effects are small and correctable. The resulting O3 calibrator has a response time < 20 s, a precision of 0.4 %, and can serve as a U.S. EPA level 4 transfer standard for the calibration of ozone analyzers.