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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Reactive oxygen species (ROS) in the particle phase may induce oxidative stress in the human lungs upon inhalation. Here we present and thoroughly characterize a modified online and offline ROS analyzer. Selected model organic compounds were tested and potential interferences from gas-phase and matrix effects of particulate constituents were evaluated. ROS measurements of filter samples revealed the rapid decay of a substantial ROS fraction, supporting the application of online measurements.
Articles | Volume 11, issue 1
Atmos. Meas. Tech., 11, 65–80, 2018
https://doi.org/10.5194/amt-11-65-2018
Atmos. Meas. Tech., 11, 65–80, 2018
https://doi.org/10.5194/amt-11-65-2018

Research article 09 Jan 2018

Research article | 09 Jan 2018

Development, characterization and first deployment of an improved online reactive oxygen species analyzer

Jun Zhou et al.

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Berglund, G. I., Carlsson, G. H., Smith, A. T., Szoke, H., Henriksen, A., and Hajdu, J.: The catalytic pathway of horseradish peroxidase at high resolution, Nature, 417, 463–468, 2002.
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Bruns, E. A., El Haddad, I., Slowik, J. G., Kilic, D., Klein, F., Baltensperger, U., and Prévôt, A. S. H.: Identification of significant precursor gases of secondary organic aerosols from residential wood combustion, Sci. Rep., 6, 27881, https://doi.org/10.1038/srep27881, 2016.
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Chen, X., Hopke, P. K., and Carter, W. P. L.: Secondary organic aerosol from ozonolysis of biogenic volatile organic compounds: Chamber studies of particle and reactive oxygen species formation, Environ. Sci. Technol., 45, 276–282, 2011.
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Short summary
Reactive oxygen species (ROS) in the particle phase may induce oxidative stress in the human lungs upon inhalation. Here we present and thoroughly characterize a modified online and offline ROS analyzer. Selected model organic compounds were tested and potential interferences from gas-phase and matrix effects of particulate constituents were evaluated. ROS measurements of filter samples revealed the rapid decay of a substantial ROS fraction, supporting the application of online measurements.
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