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

Accessing the low-polar molecular composition of boreal and arctic peat-burning organic aerosol via thermal analysis and ultrahigh-resolution mass spectrometry: Structural motifs and their formation.

J. Am. Soc. Mass Spectrom., DOI: 10.1021/jasms.4c00120 (2024)
DOI PMC
Open Access Green: Postprint online verfügbar 07/2025
Peatland fires emit organic carbon-rich particulate matter into the atmosphere. Boreal and Arctic peatlands are becoming more vulnerable to wildfires, resulting in a need for better understanding of the emissions of these special fires. Extractable, nonpolar, and low-polar organic aerosol species emitted from laboratory-based boreal and Arctic peat-burning experiments are analyzed by direct-infusion atmospheric pressure photoionization (APPI) ultrahigh-resolution mass spectrometry (UHRMS) and compared to time-resolved APPI UHRMS evolved gas analysis from the thermal analysis of peat under inert nitrogen (pyrolysis) and oxidative atmosphere. The chemical composition is characterized on a molecular level, revealing abundant aromatic compounds that partially contain oxygen, nitrogen, or sulfur and are formed at characteristic temperatures. Two main structural motifs are identified, single core and multicore, and their temperature-dependent formation is assigned to the thermal degradation of the lignocellulose building blocks and other parts of peat.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Korrespondenzautor
Schlagwörter Infrared Multiphoton Dissociation (irmpd) ; Organic Aerosol ; Peat Burning ; Structural Motifs ; Thermal Analysis ; Ultrahigh-resolution Mass Spectrometry; Polycyclic Aromatic-hydrocarbons; Ionization; Emissions; Nitrogen; Lignin; Fires; Asphaltenes; Combustion; Fractions; Reveals
e-ISSN 1044-0305
Zeitschrift Journal of the American Society for Mass Spectrometry
Verlag Elsevier
Verlagsort 1155 16th St, Nw, Washington, Dc 20036 Usa
Nichtpatentliteratur Publikationen
Begutachtungsstatus Peer reviewed
Institut(e) Cooperation Group Comprehensive Molecular Analytics (CMA)
Förderungen Research Council of Finland
Bruker FT-ICR MS
Helmholtz Association (HGF) by the Helmholtz International Laboratory
State of Florida
National Science Foundation Division of Chemistry and Division of Material Research
German Research Foundation (DFG)