Articles | Volume 24, issue 6
https://doi.org/10.5194/acp-24-3769-2024
© Author(s) 2024. 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-24-3769-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
27 Mar 2024
Research article |
| 27 Mar 2024
| 27 Mar 2024
Distribution, chemical, and molecular composition of high and low molecular weight humic-like substances in ambient aerosols
Xingjun Fan
CORRESPONDING AUTHOR
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China
Ao Cheng
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
Xufang Yu
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
Tao Cao
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China
University of Chinese Academy of Sciences, Beijing 100049, PR China
Dan Chen
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
Wenchao Ji
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
Yongbing Cai
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
Fande Meng
College of Resource and Environment, Anhui Science and Technology University, Fengyang 233100, PR China
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China
Ping'an Peng
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, PR China
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Short summary
Molecular-level characteristics of high molecular weight (HMW) and low MW (LMW) humic-like substances (HULIS) were comprehensively investigated, where HMW HULIS had larger chromophores and larger molecular size than LMW HULIS and exhibited higher aromaticity and humification. Electrospray ionization high-resolution mass spectrometry revealed more aromatic molecules in HMW HULIS. HMW HULIS had more CHON compounds, while LMW HULIS had more CHO compounds.
Molecular-level characteristics of high molecular weight (HMW) and low MW (LMW) humic-like...
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