Q. Malloy, Li Qi, B. Warren
Jul 4, 2008
Citations
2
Influential Citations
76
Citations
Quality indicators
Journal
Atmospheric Chemistry and Physics
Abstract
Primary aliphatic amines are an important class of nitrogen containing compounds 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 oxi- dation of methylamine, ethylamine, propylamine, and buty- lamine with O3 and NO3 have been investigated. Very little aerosol formation is observed in the presence of O 3 only. However, after addition of NO, and by extension NO3, large aerosol mass yields ( 44% for butylamine) are seen. Aerosol generated was determined to be organic in nature due to the small fraction of NO and NO2 in the total signal (<1% for all amines tested) as detected by an aerosol mass spectrometer (AMS). We propose a reaction mechanism be- tween carbonyl containing species and the parent amine lead- ing to formation of particulate imine products. These find- ings can have significant impacts on rural communities with elevated nighttime PM loadings, when significant levels of NO3 exist.