Articles | Volume 16, issue 9
https://doi.org/10.5194/acp-16-5561-2016
https://doi.org/10.5194/acp-16-5561-2016
Research article
 | 
04 May 2016
Research article |  | 04 May 2016

Single-particle characterization of biomass burning organic aerosol (BBOA): evidence for non-uniform mixing of high molecular weight organics and potassium

Alex K. Y. Lee, Megan D. Willis, Robert M. Healy, Jon M. Wang, Cheol-Heon Jeong, John C. Wenger, Greg J. Evans, and Jonathan P. D. Abbatt

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Single-particle measurements from a soot-particle aerosol mass spectrometer were performed to examine the mixing state of aerosol particles in an air mass influenced by aged biomass burning. Our observations indicate non-uniform mixing of particles within a biomass burning plume in terms of molecular weight and potassium content, and illustrate that high molecular weight organic compounds can be a key contributor to low-volatility BrC observed in biomass burning organic aerosols.
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