Reversible and irreversible gas–particle partitioning of dicarbonyl compounds observed in the real atmosphere

Abstract γ 8.0 × 10 - 3 for glyoxal and 2.0 × 10 - 3 for methylglyoxal best represented the loss of gaseous dicarbonyls by irreversible gas–particle partitioning processes. Compared to the reversible pathways, the irreversible pathways played a dominant role, with a proportion of more than 90 % in the gas–particle partitioning process in the real atmosphere, and the proportion was significantly influenced by relative humidity and inorganic components in aerosols. However, the reversible pathways were also substantial, especially in winter, with a proportion of more than 10 %. The partitioning processes of dicarbonyls in reversible and irreversible pathways jointly contributed to more than 25 % of SOA formation in the real atmosphere. To our knowledge, this study is the first to systemically examine both reversible and irreversible pathways in the ambient atmosphere, strives to narrow the gap between model simulations and field-measured gas–particle partitioning coefficients, and reveals the importance of gas–particle processes for dicarbonyls in SOA formation.

Angaben zum Objekt

• Standort: Deutsche Nationalbibliothek Frankfurt am Main
• Umfang: Online-Ressource
• Sprache: Englisch

Verweise und Beziehungen

• Erschienen in: Reversible and irreversible gas–particle partitioning of dicarbonyl compounds observed in the real atmosphere ; volume:22 ; number:10 ; year:2022 ; pages:6971-6987 ; extent:17 ; Atmospheric chemistry and physics ; 22, Heft 10 (2022), 6971-6987 (gesamt 17)

Beteiligte, Orts- und Zeitangaben

• Urheber: Hu, Jingcheng ; Chen, Zhongming ; Qin, Xuan ; Dong, Ping

Weitere Informationen

• DOI: 10.5194/acp-22-6971-2022
• URN: urn:nbn:de:101:1-2022060205173850671768
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:36 MESZ