Gas-to-Particle Partitioning of Products from Ozonolysis of Δ³-Carene and the Effect of Temperature and Relative Humidity.

ABSTRACT: Formation of oxidized products from Δ³-carene (C₁₀H₁₆) ozonolysis and their gas-to-particle partitioning at three temperatures (0, 10, and 20 °C) under dry conditions (<2% RH) and also at 10 °C under humid (78% RH) conditions were studied using a time-of-flight chemical ionization mass spectrometer (ToF-CIMS) combined with a filter inlet for gases and aerosols (FIGAERO). The Δ³-carene ozonolysis products detected by the FIGAERO-ToF-CIMS were dominated by semivolatile organic compounds (SVOCs). The main effect of increasing temperature or RH on the product distribution was an increase in fragmentation of monomer compounds (from C₁₀ to C₇ compounds), potentially via alkoxy scission losing a C₃ group. The equilibrium

SUBMITTER: Li L 

PROVIDER: S-EPMC10860141 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature