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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 10, issue 12
Atmos. Meas. Tech., 10, 4877-4894, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 10, 4877-4894, 2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 14 Dec 2017

Research article | 14 Dec 2017

An intercomparison of HO2 measurements by fluorescence assay by gas expansion and cavity ring-down spectroscopy within HIRAC (Highly Instrumented Reactor for Atmospheric Chemistry)

Lavinia Onel et al.
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Cited articles  
Assaf, E., Asvany, O., Votava, O., Batut, S., Schoemaecker, C., and Fittschen, C.: Measurement of line strengths in the Ã2A' ← X̃ ∼ 2 A transition of HO2 and DO2, J. Quant. Spectrosc. Ra., 201, 161–170,, 2017.
Atkinson, R., Baulch, D. L., Cox, R. A., Crowley, J. N., Hampson, R. F., Hynes, R. G., Jenkin, M. E., Rossi, M. J., and Troe, J.: Evaluated kinetic and photochemical data for atmospheric chemistry: Volume I – gas phase reactions of Ox, HOx, NOx and SOx species, Atmos. Chem. Phys., 4, 1461–1738,, 2004.
Bell, C. L., van Helden, J. P. H., Blaikie, T. P. J., Hancock, G., van Leeuwen, N. J., Peverall, R., and Ritchie, G. A. D.: Noise-Immune Cavity-Enhanced Optical Heterodyne Detection of HO2 in the Near-Infrared Range, J. Phys. Chem. A, 116, 5090–5099,, 2012.
Blin-Simiand, N., Pasquiers, S., and Magne, L.: Removal of formaldehyde by a pulsed dielectric barrier discharge in dry air in the 20 °C to 300 °C temperature range, J. Phys. D. Appl. Phys, 49, 195202,, 2016.
Blocquet, M., Schoemaecker, C., Amedro, D., Herbinet, O., Battin-Leclerc, F., and Fittschen, C.: Quantification of OH and HO2 radicals during the low-temperature oxidation of hydrocarbons by Fluorescence Assay by Gas Expansion technique, P. Natl. Acad. Sci. USA, 110, 20014–20017,, 2013.
Publications Copernicus
Short summary
Hydroperoxy (HO2) radicals are key intermediates participating in a rapid chemical cycling at the centre of the tropospheric oxidation. Fluorescence assay by gas expansion (FAGE) technique is the most commonly used for the HO2 measurements in the atmosphere. However, FAGE is an indirect technique, requiring calibration. This work finds a good agreement between the indirect FAGE method and the direct cavity ring-down spectroscopy method and hence validates FAGE and the FAGE calibration method.
Hydroperoxy (HO2) radicals are key intermediates participating in a rapid chemical cycling at...