Secondary formation and the Smoky Mountain organic aerosol: an examination of aerosol polarity and functional group composition during SEAVS

Direct Fourier transform infrared spectroscopy allowed the separation by polarity and identification of aerosol collected during the Smoky Mountain Aerosol and Visibility Study at Look Rock, TN. Results also revealed that the submicron organic aerosol was predominantly polar. The concentrations, composition and size distribution of the Smokey Mountain aerosol is governed by secondary formation processes.