Articles | Volume 20, issue 8
https://doi.org/10.5194/acp-20-4889-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Special issue:
https://doi.org/10.5194/acp-20-4889-2020
© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Optical properties and molecular compositions of water-soluble and water-insoluble brown carbon (BrC) aerosols in northwest China
Jianjun Li
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Department of Environmental Toxicology, University of California,
Davis, CA 95616, USA
Department of Environmental Toxicology, University of California,
Davis, CA 95616, USA
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Key Laboratory of Geographic Information Science of the Ministry of
Education, School of Geographic Sciences, East China Normal University,
Shanghai 200241, China
Institute of Eco-Chongming, 3663 N. Zhongshan Rd., Shanghai 200062,
China
Jin Li
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Can Wu
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Key Laboratory of Geographic Information Science of the Ministry of
Education, School of Geographic Sciences, East China Normal University,
Shanghai 200241, China
Lang Liu
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Jiayuan Wang
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Department of Environmental Toxicology, University of California,
Davis, CA 95616, USA
Wenqing Jiang
Department of Environmental Toxicology, University of California,
Davis, CA 95616, USA
Lijuan Li
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
Department of Environmental Toxicology, University of California,
Davis, CA 95616, USA
Kin Fai Ho
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
The Jockey Club School of Public Health and Primary Care, The
Chinese University of Hong Kong, Hong Kong, China
Junji Cao
Key Lab of Aerosol Chemistry & Physics, SKLLQG, Institute of Earth
Environment, Chinese Academy of Sciences, Xi'an 710061, China
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Latest update: 20 Nov 2024
Short summary
We examined light absorption properties and molecular composition of water-soluble (WS) and water-insoluble (WI) BrC in PM2.5 collected from northwest China. We found that photochemical formation contributes significantly to light absorption of WI-BrC in summer, whereas aqueous-phase reactions play an important role in secondary WS-BrC formation in winter. BrC was estimated to account for 1.36 % and 3.74 %, respectively, of total down-welling solar radiation in the UV range in summer and winter.
We examined light absorption properties and molecular composition of water-soluble (WS) and...
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