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  • Temperature and volatile or...
    Jensen, Louise N; Canagaratna, Manjula R; Kristensen, Kasper; Quéléver, Lauriane L. J; Rosati, Bernadette; Teiwes, Ricky; Glasius, Marianne; Pedersen, Henrik B; Ehn, Mikael; Bilde, Merete

    Atmospheric chemistry and physics, 08/2021, Volume: 21, Issue: 15
    Journal Article

    This work investigates the individual and combined effects of temperature and volatile organic compound precursor concentrations on the chemical composition of particles formed in the dark ozonolysis of α-pinene. All experiments were conducted in a 5 m.sup.3 Teflon chamber at an initial ozone concentration of 100 ppb and initial α-pinene concentrations of 10 and 50 ppb, respectively; at constant temperatures of 20, 0, or -15 .sup." C; and at changing temperatures (ramps) from -15 to 20 and from 20 to -15 .sup." C. The chemical composition of the particles was probed using a high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS).