AAAR 36th Annual Conference October 16 - October 20, 2017 Raleigh Convention Center Raleigh, North Carolina, USA
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Determining the Validity of Storing Biomass Burning Aerosol in Water Using an Impinger for Laboratory Studies on Physicochemical and Optical Properties
MARC FIDDLER, Damon Smith, Samin Poudel, Marquin Spann, Solomon Bililign, North Carolina A&T State University
Abstract Number: 748 Working Group: Instrumentation and Methods
Abstract Since it is not always practical to carry laboratory equipment into the field, it is useful to collect samples and store them for future analysis. The goal of this study is to determine if there is a significant difference in the properties of fresh biomass burning aerosol compared to samples stored in distilled water using an impinger. A previous field study has determined that the size distribution of BB aerosol samples stored in water remains unchanged for at least two weeks after storage, but it is currently unknown if this is representative of the original field sample and if the aerosols have undergone significant chemical changes that affect their optical properties. The primary factors being considered are size distribution, composition, and single scattering albedo. A tube furnace and smog chamber were used to generate BB aerosol in a laboratory setting. These results were also compared with T-Matrix calculations using electron microscopy images of filter samples.