Water-Soluble Organic Aerosol material and the light-absorption characteristics of aqueous extracts measured over the Southeastern United States
Georgia Institute of Technology · Environmental Protection Agency · +1 more institution
Abstract
Abstract. Light absorption of fine particle (PM2.5) aqueous extracts between wavelengths of 200 and 800 nm were investigated from two data sets: 24-h Federal Reference Method (FRM) filter extracts from 15 Southeastern US monitoring sites over the year of 2007 (900 filters), and online measurements from a Particle-Into-Liquid Sampler deployed from July to mid-August 2009 in Atlanta, Georgia. Three main sources of soluble chromophores were identified: biomass burning, mobile source emissions, and compounds linked to secondary organic aerosol (SOA) formation. Absorption spectra of aerosol solutions from filter extracts were similar for different sources. Angstrom exponents were ~7±1 for biomass burning and…
Citation impact
- FWCI
- 13.33
- Percentile
- 100%
- References
- 56
Authors
6Topics & keywords
- Levoglucosan
- Aerosol
- Biomass burning
- Total organic carbon
- Absorption (acoustics)
- Biomass (ecology)
- Particle (ecology)
- Environmental chemistry
- Sustainable cities and communities