Articles | Volume 20, issue 4
https://doi.org/10.5194/acp-20-2513-2020
https://doi.org/10.5194/acp-20-2513-2020
Research article
 | 
02 Mar 2020
Research article |  | 02 Mar 2020

Molecular compositions and optical properties of dissolved brown carbon in biomass burning, coal combustion, and vehicle emission aerosols illuminated by excitation–emission matrix spectroscopy and Fourier transform ion cyclotron resonance mass spectrometry analysis

Jiao Tang, Jun Li, Tao Su, Yong Han, Yangzhi Mo, Hongxing Jiang, Min Cui, Bin Jiang, Yingjun Chen, Jianhui Tang, Jianzhong Song, Ping'an Peng, and Gan Zhang

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AR by J. Li on behalf of the Authors (14 Nov 2019)  Author's response   Manuscript 
ED: Referee Nomination & Report Request started (27 Nov 2019) by Alex Lee
RR by Anonymous Referee #1 (14 Dec 2019)
RR by Anonymous Referee #2 (18 Dec 2019)
ED: Publish subject to technical corrections (09 Jan 2020) by Alex Lee
AR by J. Li on behalf of the Authors (16 Jan 2020)  Author's response   Manuscript 
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Short summary
We investigated the light absorption, fluorescence, and molecular composition of dissolved organic carbon from the simulated combustion of biomass and coal and vehicle emissions with UV–vis spectra, EEM-PARAFAC, and FT-ICR MS. We observed high light absorption capacity from source emissions, and fluorescence spectra and molecular structures varied by source. We concluded that an EEM- and molecular-composition-based methodology could be helpful in the source apportionment of atmospheric aerosols.
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