Characterization of atmospheric humic-like substances (HULIS) at a high elevation in North China: Abundance, molecular composition and optical properties

被引:0
作者
Gong, Chaofan [1 ]
Liu, Xinghui [1 ]
Nie, Xiaoling [1 ,2 ]
Xu, Xinmiao [1 ]
Wang, Xinfeng [3 ]
Xue, Likun [3 ]
Wang, Yan [1 ]
机构
[1] Shandong Univ, Sch Environm Sci & Engn, Qingdao 266237, Peoples R China
[2] Univ Jinan, Sch Water Conservancy & Environm, Jinan 250022, Peoples R China
[3] Shandong Univ, Environm Res Inst, Qingdao 266237, Peoples R China
来源
JOURNAL OF ENVIRONMENTAL SCIENCES | 2025年 / 155卷
关键词
Humic-like substances (HULIS); Abundance; Optical property; FT-ICR MS; Mount Tai; PM2.5; DISSOLVED ORGANIC-MATTER; LIGHT-ABSORPTION; PARTICULATE MATTER; BIOMASS MATERIALS; BROWN CARBON; FLUORESCENCE; EXCITATION; CHEMISTRY; COMPONENTS; COMBUSTION;
D O I
10.1016/j.jes.2024.11.028
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The optical absorption of large molecular compounds HULIS (humic-like substances) can significantly impact the aerosol light absorption and radiative forcing, influencing cloud condensation nuclei formation and thus the climate and atmospheric environment. This study collected aerosol (PM2.5 ) samples from the summit of Mount Tai in North China to investigate the concentration, molecular composition, and optical properties of HULIS. The average concentration of HULIS in the PM2.5 in this study was 1.26 +/- 0.54 mu g/m3 , comprising for 56 % of the water-soluble organic carbon (WSOC), with levels lower than urban areas but higher than other mountainous regions. Mass spectrometry revealed that CHO and CHON components, with high aromaticity and phenolic groups, are major contributors to absorption and fluorescence. These results indicate that HULIS is mainly composed of lignin and proteins/amino sugars, derived from combustion and secondary formation, and possesses a high light absorption capacity (with MAE365 (mass absorption efficiency) and AAE (A & ring;ngstr & ouml;m exponent) indices of 0.62 m2 /g and 4.99, respectively). Parallel factor analysis identified three fluorescence components of HULIS, with proportions of 60.8 % for less oxygen humic-like substances, 21.0 % for high oxygen humic-like substances, and 18.2 % for protein-like substances. Our study highlights the significance of the light-absorbing capacity and secondary formation of HULIS at Mount Tai, laying the groundwork for investigation into the climate effects, formation mechanisms, and sources of HULIS generation. (c) 2025 The Research Center for Eco-Environmental Sciences, Chinese Academy of
引用
收藏
页码:673 / 685
页数:13
相关论文
共 70 条
  • [61] Molecular characterization of nitrogen-containing organic compounds in fractionated atmospheric humic-like substances (HULIS) and its relationship with optical properties
    Wu, Chenghao
    Zhu, Bao
    Liang, Wenqing
    Ruan, Ting
    Jiang, Guibin
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 832
  • [62] Humic-Like Substances (HULIS) in Aerosols of Central Tibetan Plateau (Nam Co, 4730 m asl): Abundance, Light Absorption Properties, and Sources
    Wu, Guangming
    Wan, Xin
    Gao, Shaopeng
    Fu, Pingqing
    Yin, Yongguang
    Li, Gang
    Zhang, Guoshuai
    Kang, Shichang
    Ram, Kirpa
    Cong, Zhiyuan
    [J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2018, 52 (13) : 7203 - 7211
  • [63] ROS-generation potential of Humic-like substances (HULIS) in ambient PM2.5 in urban Shanghai: Association with HULIS concentration and light absorbance
    Xu, Xiaoya
    Lu, Xiaohui
    Li, Xiang
    Liu, Yaxi
    Wang, Xiaofei
    Chen, Hong
    Chen, Jianmin
    Yang, Xin
    Fu, Tzung-May
    Zhao, Qianbiao
    Fu, Qingyan
    [J]. CHEMOSPHERE, 2020, 256
  • [64] Contrasting compositions and sources of organic aerosol markers in summertime PM2.5 from urban and mountainous regions in the North China Plain
    Yi, Yanan
    Meng, Jingjing
    Hou, Zhanfang
    Wang, Gehui
    Zhou, Ruiwen
    Li, Zheng
    Li, Yuanyuan
    Chen, Min
    Liu, Xiaodi
    Li, Hongji
    Yan, Li
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2021, 766
  • [65] Optical properties, molecular characterizations, and oxidative potentials of different polarity levels of water-soluble organic matters in winter PM2.5 in six China's megacities
    Zhang, Tian
    Shen, Zhenxing
    Huang, Shasha
    Lei, Yali
    Zeng, Yaling
    Sun, Jian
    Zhang, Qian
    Ho, Steven Sai Hang
    Xu, Hongmei
    Cao, Junji
    [J]. SCIENCE OF THE TOTAL ENVIRONMENT, 2022, 853
  • [66] Seasonal and diurnal variation of PM2.5 HULIS over Xi'an in Northwest China: Optical properties, chemical functional group, and relationship with reactive oxygen species (ROS)
    Zhang, Tian
    Huang, Shasha
    Wang, Diwei
    Sun, Jian
    Zhang, Qian
    Xu, Hongmei
    Ho, Steven Sai Hang
    Cao, Junji
    Shen, Zhenxing
    [J]. ATMOSPHERIC ENVIRONMENT, 2022, 268
  • [67] Zhang YZ, 2017, NAT GEOSCI, V10, P486, DOI [10.1038/NGEO2960, 10.1038/ngeo2960]
  • [68] Atmospheric organic matter in clouds: exact masses and molecular formula identification using ultrahigh-resolution FT-ICR mass spectrometry
    Zhao, Y.
    Hallar, A. G.
    Mazzoleni, L. R.
    [J]. ATMOSPHERIC CHEMISTRY AND PHYSICS, 2013, 13 (24) : 12343 - 12362
  • [69] Characterization of humic-like substances in PM2.5 during biomass burning episodes on Weizhou Island, China
    Zhou, Xueming
    Zhang, Leiming
    Tan, Jihua
    Zhang, Kai
    Mao, Jingyin
    Duan, Jingchun
    Hu, Jingnan
    [J]. ATMOSPHERIC ENVIRONMENT, 2018, 191 : 258 - 266
  • [70] Measurement report: Changes in light absorption and molecular composition ofwater-soluble humic-like substances during a winter haze bloom-decay processin Guangzhou, China
    Zou, Chunlin
    Cao, Tao
    Li, Meiju
    Song, Jianzhong
    Jiang, Bin
    Jia, Wanglu
    Li, Jun
    Ding, Xiang
    Yu, Zhiqiang
    Zhang, Gan
    Peng, Ping'an
    [J]. ATMOSPHERIC CHEMISTRY AND PHYSICS, 2023, 23 (02) : 963 - 979