Pyruvic acid, an efficient catalyst in SO₃ hydrolysis and effective clustering agent in sulfuric-acid-based new particle formation

Abstract α SO 3 SO 3 - kcal mol - 1 at 298 K, ∼ kcal mol - 1 lower than that in the water-catalyzed SO 3 SO 3 ∼ SO 3 SA ⚫ PA cluster, we proceeded to examine the PA clustering efficiency in a sulfuric-acid–pyruvic-acid–ammonia (SA - PA - NH 3 6  molec. cm - 3), PA (1010  molec. cm - 3) and NH 3 11 and 5 × 11  molec. cm - 3), PA-enhanced particle formation involves clusters containing at most one PA molecule. Namely, under these monomer concentrations and 238 K, the (SA) 2 ⚫ PA ⚫ (NH 3) 2 ∼ K), however, the net flux to the particle formation is dominated by pure SA - NH 3 SA - PA - NH 3 SA - NH 3 × 2 at 238 K and [ NH 3 ]  = × 11  molec. cm - 3. This indicates that PA may actively participate in aerosol formation, only in cold regions of the troposphere and highly NH 3 -polluted environments. The inclusion of this mechanism in aerosol models may reduce uncertainties that prevail in modeling the aerosol impact on climate.

Angaben zum Objekt

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

Verweise und Beziehungen

• Erschienen in: Pyruvic acid, an efficient catalyst in SO₃ hydrolysis and effective clustering agent in sulfuric-acid-based new particle formation ; volume:22 ; number:3 ; year:2022 ; pages:1951-1963 ; extent:13 ; Atmospheric chemistry and physics ; 22, Heft 3 (2022), 1951-1963 (gesamt 13)

Beteiligte, Orts- und Zeitangaben

• Urheber: Tsona Tchinda​​​​​​​, Narcisse ; Du, Lin ; Liu, Ling ; Zhang, Xiuhui

Weitere Informationen

• DOI: 10.5194/acp-22-1951-2022
• URN: urn:nbn:de:101:1-2022021704244386719764
• Rechteinformation: Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
• Letzte Aktualisierung: 15.08.2025, 07:34 MESZ