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Schneider, E.* ; Rüger, C.P.* ; Chacón-Patiño, M.L.* ; Somero, M.* ; Ruppel, M.M.* ; Ihalainen, M.* ; Köster, K.* ; Sippula, O.* ; Czech, H. ; Zimmermann, R.

The complex composition of organic aerosols emitted during burning varies between Arctic and boreal peat.

Comm. Earth Environ. 5:137 (2024)

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Peatlands in the northern hemisphere are a major carbon storage but face an increased risk of wildfires due to climate change leading to large-scale smoldering fires in boreal and Arctic peatlands. Smoldering fires release organic carbon rich particulate matter, which influences the earth’s radiative balance and can cause adverse health effects for humans. Here we characterize the molecular composition of biomass burning particulate matter generated by laboratory burning experiments of peat by electrospray ionization 21 T Fourier-transform ion cyclotron resonance mass spectrometry, revealing a highly complex mixture of aromatic and aliphatic organic compounds with abundant heteroatoms including oxygen, sulfur and up to five nitrogen atoms. Primary organosulfur species are identified in the emissions of peat-smoldering, in part also containing nitrogen. Differences are observed when comparing structural motifs as well as the chemical composition of boreal and Arctic peat burning emissions, with the latter containing compounds with more nitrogen and sulfur.

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Publication type Article: Journal article

Document type Scientific Article

Corresponding Author

Keywords Mass Resolving Power; Ft-icr Ms; Molecular Characterization; Dynamic-range; Brown Carbon; Emission Factors; Resolution; Combustion; Organosulfates; Spectrometry

ISSN (print) / ISBN 2662-4435

e-ISSN 2662-4435

Journal Communications Earth & Environment

Quellenangaben Volume: 5, Issue: 1, Article Number: 137

Publisher Nature Publishing Group

Publishing Place Campus, 4 Crinan St, London, N1 9xw, England

Non-patent literature Publications

Reviewing status Peer reviewed

Institute(s) Cooperation Group Comprehensive Molecular Analytics (CMA)

Grants Bruker FT-ICR MS
DFG
Helmholtz Association (HGF) by the Helmholtz International Laboratory
State of Florida
National Science Foundation Division of Chemistry and Division of Material Research
Research Council of Finland
German Research Foundation (DFG)
Deutsche Forschungsgemeinschaft (German Research Foundation)