Articles | Volume 16, issue 10
https://doi.org/10.5194/amt-16-2641-2023
https://doi.org/10.5194/amt-16-2641-2023
Research article
 | 
30 May 2023
Research article |  | 30 May 2023

An automated online field instrument to quantify the oxidative potential of aerosol particles via ascorbic acid oxidation

Battist Utinger, Steven John Campbell, Nicolas Bukowiecki, Alexandre Barth, Benjamin Gfeller, Ray Freshwater, Hans-Rudolf Rüegg, and Markus Kalberer

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Latest update: 13 Dec 2024
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Short summary
Exposure to atmospheric aerosols can lead to adverse health effect, but particle components responsible for this are unknown. Redox-active compounds, some with very short lifetimes, are considered to be a toxic class of compounds in particles. We developed the first online field instrument to quantify short-lived and stable redox-active compounds with a physiological assay based on ascorbic acid and a high time resolution and detection limits to allow measurements at unpolluted locations.