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The impact of photochemical aging on secondary aerosol formation from a marine engine.
npj clim. atmos. sci. 8:106 (2025)
Ship traffic is known as an important contributor to air pollution. Regulations aimed at reducing sulfur oxide pollution by limiting the fuel sulfur content (FSC) may also decrease primary particulate matter (PM) emitted from ships. However, there is a knowledge gap regarding how the FSC affects secondary aerosol formation. The emissions from a research ship engine operated with either low sulfur heavy fuel oil (LS-HFO) (FSC = 0.5%) or marine gas oil (MGO) (FSC = 0.01%), were photochemically processed in the oxidation flow reactor "PEAR" to achieve an equivalent photochemical age between 0 and 9 days in the atmosphere. FSC was found to have no significant impact on secondary organic aerosol formation after 3 days of aging, at 1.7 +/- 0.4 g/kg for MGO and 1.5 +/- 0.4 g/kg for LS-HFO. Furthermore, the composition and oxidative pathways remained similar regardless of FSC. However, because of the higher secondary SO4 formation and primary aerosol emissions, LS-HFO had significantly higher total PM than MGO.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Oxidation Flow Reactors; Aromatic Emission Profiles; High-resolution; Chemistry
ISSN (print) / ISBN
2397-3722
e-ISSN
2397-3722
Quellenangaben
Volume: 8,
Issue: 1,
Article Number: 106
Publisher
Springer
Publishing Place
London
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Cooperation Group Comprehensive Molecular Analytics (CMA)
Helmholtz AI - FZJ (HAI - FZJ)
Helmholtz AI - FZJ (HAI - FZJ)
Grants
ULTRHAS Horizon Europe project