Articles | Volume 19, issue 13
https://doi.org/10.5194/acp-19-8817-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-19-8817-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
11 Jul 2019
Research article |
| 11 Jul 2019
| 11 Jul 2019
Measuring light absorption by freshly emitted organic aerosols: optical artifacts in traditional solvent-extraction-based methods
Nishit J. Shetty
Center for Aerosol Science and Engineering, Department of Energy,
Environmental and Chemical Engineering, Washington University in St. Louis,
St. Louis, MO 63130, USA
Apoorva Pandey
Center for Aerosol Science and Engineering, Department of Energy,
Environmental and Chemical Engineering, Washington University in St. Louis,
St. Louis, MO 63130, USA
Stephen Baker
USDA Forest Service, Rocky Mountain Research Station, Fire Sciences
Laboratory, Missoula, Montana, USA
Wei Min Hao
USDA Forest Service, Rocky Mountain Research Station, Fire Sciences
Laboratory, Missoula, Montana, USA
Rajan K. Chakrabarty
CORRESPONDING AUTHOR
Center for Aerosol Science and Engineering, Department of Energy,
Environmental and Chemical Engineering, Washington University in St. Louis,
St. Louis, MO 63130, USA
McDonnell Center for the Space Sciences, Washington University in St. Louis, St. Louis, MO 63130, USA
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https://doi.org/10.5194/acp-17-2839-2017, 2017.
Short summary
We investigated biases in particle-phase absorption coefficients for organic aerosol from bulk-phase absorbance measurements of solvent extracts in the visible spectrum. These biases were systematically studied as a function of organic-to-total carbon mass ratios and aerosol single scattering albedo. A linear correlation between SSA and OC / TC ratios was observed. Differences in the absorption Ångström exponents from bulk- and particle-phase measurements were also investigated.
We investigated biases in particle-phase absorption coefficients for organic aerosol from...
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