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AMT | Articles | Volume 12, issue 2
Atmos. Meas. Tech., 12, 891–902, 2019
https://doi.org/10.5194/amt-12-891-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Atmos. Meas. Tech., 12, 891–902, 2019
https://doi.org/10.5194/amt-12-891-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 08 Feb 2019

Research article | 08 Feb 2019

Measurements of hydroperoxy radicals (HO2) at atmospheric concentrations using bromide chemical ionisation mass spectrometry

Sascha R. Albrecht et al.
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Andrés-Hernández, M. D., Stone, D., Brookes, D. M., Commane, R., Reeves, C. E., Huntrieser, H., Heard, D. E., Monks, P. S., Burrows, J. P., Schlager, H., Kartal, D., Evans, M. J., Floquet, C. F. A., Ingham, T., Methven, J., and Parker, A. E.: Peroxy radical partitioning during the AMMA radical intercomparison exercise, Atmos. Chem. Phys., 10, 10621–10638, https://doi.org/10.5194/acp-10-10621-2010, 2010. a
Apel, E. C., Brauers, T., Koppmann, R., Bandowe, B., Boßmeyer, J., Holzke, C., Tillmann, R., Wahner, A., Wegener, R., Brunner, A., Jocher, M., Ruuskanen, T., Spirig, C., Steigner, D., Steinbrecher, R., Gomez Alvarez, E., Müller, K., Burrows, J. P., Schade, G., Solomon, S. J., Ladstätter-Weißenmayer, A., Simmonds, P., Young, D., Hopkins, J. R., Lewis, A. C., Legreid, G., Reimann, S., Hansel, A., Wisthaler, A., Blake, R. S., Ellis, A. M., Monks, P. S., and Wyche, K. P.: Intercomparison of oxygenated volatile organic compound measurements at the SAPHIR atmosphere simulation chamber, J. Geophys. Res.-Atmos., 113, D20307, https://doi.org/10.1029/2008JD009865, 2008. a
Berresheim, H., Elste, T., Plass-Dülmer, C., Eiseleb, F., and Tannerb, D.: Chemical ionization mass spectrometer for long-term measurements of atmospheric OH and H2SO4, Int. J. Mass Spectrom., 202, 91–109, https://doi.org/10.1016/S1387-3806(00)00233-5, 2000. a, b
Burkert, J., Andrés-Hernández, M.-D., Stöbener, D., Burrows, J. P., Weissenmayer, M., and Kraus, A.: Peroxy radical and related trace gas measurements in the boundary layer above the Atlantic Ocean, J. Geophys. Res.-Atmos., 106, 5457–5477, https://doi.org/10.1029/2000jd900613, 2001. a
Caldwell, G., Masucci, J., and Ikonomou, M.: Negative ion chemical ionization mass spectrometry-binding of molecules to bromide and iodide anions, J. Mass Spectrom., 24, 8–14, https://doi.org/10.1002/oms.1210240103, 1989. a
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Within this study we demonstrate reliable measurement of hydroperoxy (HO2) radicals via chemical ionisation mass spectrometry. HO2 is detected as an ion cluster with bromide ions, which allows a selective detection. This direct and sensitive measurement provides reliable data of HO2 radical concentrations in the atmosphere as demonstrated in the first application in simulation chamber experiments.
Within this study we demonstrate reliable measurement of hydroperoxy (HO2) radicals via chemical...
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