Geoffroy Duporte, Pierre-Marie Flaud, Julien Kammer, Emmanuel Geneste, Sylvie Augagneur, Edouard Pangui, Houssni Lamkaddam, Aline Gratien, Jean-Francois Doussin, Helene Budzinski, Eric Villenave, Emilie Perraudin
The present work is an extensive laboratory study of organosulfate (OS) formation from the reaction of α-pinene oxidation products or proxies with acidified ammonium sulfate aerosols in three different acidity conditions ((NH4)2SO4 0.06 M; (NH4)2SO4/H2SO4 0.06 M/0.005 M; (NH4)2SO4/H2SO4 0.03 M/0.05 M). The kinetics of the reactions of α-pinene, α-pinene oxide, isopinocampheol, pinanediol and myrtenal with ammonium sulfate particles were studied using a quasi-static reactor. The reaction of α-pinene oxide with the highly acidic ammonium sulfate particles was determined to be 7, 10, 21 and 24 times faster than for isopinocampheol, α-pinene, pinanedial and myrtenal, respectively for an OS precursor concentration of 1 ppm and after 1h reaction time...
December 18, 2019: Journal of Physical Chemistry. A