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.
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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35 citations as recorded by crossref.
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- Global Measurements of Brown Carbon and Estimated Direct Radiative Effects L. Zeng et al. 10.1029/2020GL088747
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- Brown carbon absorptivity in fresh wildfire smoke: associations with volatility and chemical compound groups N. Shetty et al. 10.1039/D3EA00067B
- Light absorption properties and molecular compositions of water-soluble and methanol-soluble organic carbon emitted from wood pyrolysis and combustion R. Zhao et al. 10.1016/j.scitotenv.2021.151136
- Characterization of Chemical Components and Optical Properties of Toluene Secondary Organic Aerosol in Presence of Ferric Chloride Fine Particles W. Wang et al. 10.3390/atmos14071075
- Light absorption and emissions inventory of humic-like substances from simulated rainforest biomass burning in Southeast Asia J. Tang et al. 10.1016/j.envpol.2020.114266
- From Measurements to Models: Toward Accurate Representation of Brown Carbon in Climate Calculations R. Saleh 10.1007/s40726-020-00139-3
- Molecular Analysis of Secondary Brown Carbon Produced from the Photooxidation of Naphthalene K. Siemens et al. 10.1021/acs.est.1c03135
- Potential underestimation of ambient brown carbon absorption based on the methanol extraction method and its impacts on source analysis Z. Xu et al. 10.5194/acp-22-13739-2022
- Brown carbon absorption and radiative effects under intense residential wood burning conditions in Southeastern Europe: New insights into the abundance and absorptivity of methanol-soluble organic aerosols D. Paraskevopoulou et al. 10.1016/j.scitotenv.2022.160434
- Shortwave absorption by wildfire smoke dominated by dark brown carbon R. Chakrabarty et al. 10.1038/s41561-023-01237-9
- Brown Carbon in Primary and Aged Coal Combustion Emission H. Ni et al. 10.1021/acs.est.0c08084
- A broadband cavity-enhanced spectrometer for atmospheric aerosol light extinction measurements S. John et al. 10.1080/02786826.2021.1944604
- Optical Properties and Refractive Index of Wintertime Aerosol at a Highly Polluted North‐Indian Site T. Kapoor et al. 10.1029/2022JD038272
- Primary nature of brown carbon absorption in a frigid atmosphere with strong haze chemistry Y. Cheng et al. 10.1016/j.envres.2021.112324
- Measurement report: Optical characterization, seasonality, and sources of brown carbon in fine aerosols from Tianjin, North China: year-round observations Z. Dong et al. 10.5194/acp-24-5887-2024
- Brown Carbon Emissions from Biomass Burning under Simulated Wildfire and Prescribed-Fire Conditions C. Glenn et al. 10.1021/acsestair.4c00089
- Quantifying brown carbon light absorption in real-world biofuel combustion emissions M. Islam et al. 10.1080/02786826.2022.2051425
- Light Absorption and Chemical Composition of Brown Carbon Organic Aerosol Produced from Burning of Selected Biofuels K. Siemens et al. 10.1021/acsearthspacechem.4c00056
- A direct method to quantify methanol-soluble organic carbon for brown carbon absorption studies D. Paraskevopoulou et al. 10.1016/j.mex.2023.102313
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Latest update: 23 Nov 2024
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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