Articles | Volume 19, issue 6
Atmos. Chem. Phys., 19, 3779–3796, 2019
https://doi.org/10.5194/acp-19-3779-2019
Atmos. Chem. Phys., 19, 3779–3796, 2019
https://doi.org/10.5194/acp-19-3779-2019
Research article
25 Mar 2019
Research article | 25 Mar 2019

Seasonality in the Δ33S measured in urban aerosols highlights an additional oxidation pathway for atmospheric SO2

David Au Yang et al.

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Short summary
Sulfates present in urban aerosols collected worldwide usually exhibit 33S-anomalies whose origin remains unclear. Besides, the sulfate concentration is not very well modelled nowadays, which, coupled with the isotopic composition anomaly on the 33S, would highlight the presence of at least an additional oxidation pathway, different from O2+TMI, O3, OH, H2O2 and NO2. We suggest here the implication of two other possible oxidation pathways.
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