Articles | Volume 18, issue 11
Atmos. Chem. Phys., 18, 8453–8467, 2018
Atmos. Chem. Phys., 18, 8453–8467, 2018
Research article
15 Jun 2018
Research article | 15 Jun 2018

High-molecular-weight esters in α-pinene ozonolysis secondary organic aerosol: structural characterization and mechanistic proposal for their formation from highly oxygenated molecules

Ariane Kahnt et al.

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Cited articles

Beck, M. and Hoffmann, T.: A detailed MSn study for the molecular identification of a dimer formed from oxidation of pinene, Atmos. Environ., 130, 120–126, 2016. 
Bohr, F., Henon, E., Garcia, I., and Castro, M.: Theoretical study of the peroxy radicals RO2 self-reaction: Structures and stabilization energies of the intermediate RO4R for various R, Int. J. Quantum Chem., 75, 671–682, 1999. 
Bonn, B., Schuster, G., and Moortgat, G.: Influence of water vapor on the process of new particle formation during monoterpene ozonolysis, J. Phys. Chem. A, 106, 2869–2881, 2002. 
Claeys, M., Iinuma, Y., Szmigielski, R., Surratt, J. D., Blockhuys, F., Van Alsenoy, C., Böge, O., Sierau, B., Gómez-González, Y., Vermeylen, R., Van der Veken, P., Shahgholi, M., Chan, A. W. H., Herrmann, H., Seinfeld, J. H., and Maenhaut, W.: Terpenylic acid and related compounds from the oxidation of α-pinene: Implications for new particle formation and growth above forests, Environ. Sci. Technol., 43, 6976–6982, 2009. 
Docherty, K. S., Wu, W., Lim, Y. B., and Ziemann, P. J.: Contributions of organic peroxides to secondary aerosol formed from reactions of monoterpenes with O3, Environ. Sci. Technol., 39, 4049–4059, 2005. 
Short summary
High-molecular-weight esters present in α-pinene ozonolysis secondary organic aerosol have been structurally characterized with electrospray ionization mass spectrometry. Unambiguous evidence could be obtained for the linkage in the MW 368 hydroxypinonyl ester of pinic acid, while the same linkage could be supported for the MW 358 diaterpenylic ester of pinic acid. A mechanistic proposal is presented to explain their possible formation from highly oxygenated molecules reported in previous work.
Final-revised paper