Articles | Volume 19, issue 13
Atmos. Chem. Phys., 19, 8817–8830, 2019
https://doi.org/10.5194/acp-19-8817-2019
Atmos. Chem. Phys., 19, 8817–8830, 2019
https://doi.org/10.5194/acp-19-8817-2019

Research article 11 Jul 2019

Research article | 11 Jul 2019

Measuring light absorption by freshly emitted organic aerosols: optical artifacts in traditional solvent-extraction-based methods

Nishit J. Shetty et al.

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AR: Author's response | RR: Referee report | ED: Editor decision
AR by Rajan Chakrabarty on behalf of the Authors (30 Mar 2019)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (04 Apr 2019) by Sergey A. Nizkorodov
RR by Anonymous Referee #2 (17 Apr 2019)
RR by Anonymous Referee #5 (23 May 2019)
ED: Publish subject to minor revisions (review by editor) (28 May 2019) by Sergey A. Nizkorodov
AR by Rajan Chakrabarty on behalf of the Authors (07 Jun 2019)  Author's response    Manuscript
ED: Publish as is (07 Jun 2019) by Sergey A. Nizkorodov
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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.
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