Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 8 4 2008 10.5194/acpd-8-12695-2008 http://www.atmos-chem-phys-discuss.net/8/12695/2008/ http://www.atmos-chem-phys-discuss.net/8/12695/2008/acpd-8-12695-2008.html http://www.atmos-chem-phys-discuss.net/8/12695/2008/acpd-8-12695-2008.pdf 12695 12720 2008-07-04 Secondary organic aerosol formation from primary aliphatic amines with NO₃ radical Q. G. J. Malloy Li Qi B. Warren D. R. Cocker III M. E. Erupe P. J. Silva phil.silva@usu.edu University of California-Riverside, Bourns College of Engineering, Department of Chemical and Environmental Engineering, Riverside, California 92521-0001, USA Bourns College of Engineering, Center for Environmental Research and Technology (CE-CERT), USA Department of Chemistry and Biochemistry, Utah State University, 0300 Old Main Hall, Logan Utah 84322-0300, USA Primary aliphatic amines are an important class of nitrogen containing compounds found to be emitted from automobiles, waste treatment facilities and agricultural animal operations. A series of experiments conducted at the UC-Riverside/CE-CERT Environmental Chamber is presented in which oxidation of methylamine, ethylamine, propylamine, and butylamine with NO₃ has been investigated. Very little aerosol formation is observed in the presence of O₃ only. However, after addition of NO, and by extension NO₃, large yields of aerosol mass loadings (~44% for butylamine) are seen. 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