Large Gas-Phase Source of Esters and Other Accretion Products in the Atmosphere.

ABSTRACT: Dimeric accretion products have been observed both in atmospheric aerosol particles and in the gas phase. With their low volatilities, they are key contributors to the formation of new aerosol particles, acting as seeds for more volatile organic vapors to partition onto. Many particle-phase accretion products have been identified as esters. Various gas- and particle-phase formation pathways have been suggested for them, yet evidence remains inconclusive. In contrast, peroxide accretion products have been shown to form via gas-phase peroxy radical (RO₂) cross reactions. Here, we show that these reactions can also be a major source of esters and other types of accretion products. We studied α-pinene ozonolysis using state-of-the-art chemical ionization mass spectrometry together w

SUBMITTER: Perakyla O 

PROVIDER: S-EPMC10103131 | biostudies-literature | 2023 Apr

REPOSITORIES: biostudies-literature