Articles | Volume 11, issue 1
https://doi.org/10.5194/amt-11-65-2018
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, Emily A. Bruns, Peter Zotter, Giulia Stefenelli, André S. H. Prévôt, Urs Baltensperger, Imad El-Haddad, and Josef Dommen

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Latest update: 27 Mar 2024
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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.