Institutional Repository of Key Laboratory of Coastal Zone Environmental Processes, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (KLCEP)
The Sources and Atmospheric Processes of Strong Light-Absorbing Components in Water Soluble Brown Carbon: Insights From a Multi-Proxy Study of PM2.5 in 10 Chinese Cities | |
Mo, Yangzhi1,2,3,4; Li, Jun1,2,3,4; Zhong, Guangcai1,2,3,4; Zhu, Sanyuan1,2,3,4; Cheng, Zhineng1,2,3,4; Tang, Jiao1,2,3,4; Jiang, Hongxing5; Jiang, Bin1,2,3,4; Liao, Yuhong1,2,3,4; Song, Jianzhong1,2,3,4; Tian, Chongguo6![]() | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
2024-01-28 | |
卷号 | 129期号:2页码:17 |
关键词 | atmospheric humic-like substances water-soluble brown carbon dual carbon isotopes recalcitrant coal combustion aromatic components |
DOI | 10.1029/2023JD039512 |
通讯作者 | Li, Jun(junli@gig.ac.cn) |
英文摘要 | Humic-like substances (HULIS) are significant contributor to the light absorption of water-soluble brown carbon (WSBrC), which contains certain strong light-absorbing chemical components that are not well understood, impeding the assessment of WSBrC's climate impact. China as the hotspot regions with high loading of WSBrC characterized by high light-absorbing capacity, here, we investigated the sources and atmospheric processes (delta C-13-Delta C-14), molecular composition (Fourier transform ion cyclotron resonance mass spectrometry), and light absorption properties (UV spectrophotometry) of HULIS in PM2.5 from 10 Chinese cities. HULIS-C was major contributor to the light absorption coefficient (70.5 +/- 6.6%) of WSBrC at 365 nm, which was more enriched with fossil sources (48.0 +/- 9.0% vs. 30.3 +/- 13.9%) but depleted in C-13 (delta C-13: -25.6 +/- 0.9 parts per thousand vs. -22.4 +/- 1.0 parts per thousand) relative to non-HULIS-C. This suggests that the fossil components in HULIS are more recalcitrant to oxidative aging and exhibit higher light-absorbing capacity, while the non-fossil organic carbon is more likely to be oxidatively bleached into small, colorless, and highly polar molecules (i.e., non-HULIS). Aromatic components are the major strong light-absorbing fossil components in HULIS, dominantly originating from coal combustion (>77%). Non-negative matrix factorization model showed that aromatic molecules from coal combustion have higher molecular weight and lower oxidation levels than biomass burning, potentially making them to be photo-recalcitrant compounds. Our finding that coal combustion-derived BrC maybe more persistent in the atmosphere and has greater long-term impact on climate than BrC derived from biomass burning is an important consideration in climate models and mitigation policies. |
资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of China ; Alliance of International Science Organizations ; Guangdong Basic and Applied Basic Research Foundation ; China Scholarship Council |
收录类别 | SCI |
语种 | 英语 |
关键词[WOS] | HUMIC-LIKE SUBSTANCES ; MOLECULAR-SIZE DISTRIBUTION ; DISSOLVED ORGANIC-MATTER ; BIOMASS BURNING AEROSOL ; OPTICAL-PROPERTIES ; ABSORPTION PROPERTIES ; MASS-SPECTROMETRY ; ELEMENTAL CARBON ; URBAN AEROSOLS ; HULIS |
研究领域[WOS] | Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:001144128800001 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.yic.ac.cn/handle/133337/34348 |
专题 | 中国科学院海岸带环境过程与生态修复重点实验室 中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室 |
通讯作者 | Li, Jun |
作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect, Guangzhou, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong, Guangdong, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 5.Fudan Univ, Shanghai Key Lab Particle Pollut & Prevent LAP3, Dept Environm Sci & Engn, Shanghai, Peoples R China 6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China |
推荐引用方式 GB/T 7714 | Mo, Yangzhi,Li, Jun,Zhong, Guangcai,et al. The Sources and Atmospheric Processes of Strong Light-Absorbing Components in Water Soluble Brown Carbon: Insights From a Multi-Proxy Study of PM2.5 in 10 Chinese Cities[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2024,129(2):17. |
APA | Mo, Yangzhi.,Li, Jun.,Zhong, Guangcai.,Zhu, Sanyuan.,Cheng, Zhineng.,...&Zhang, Gan.(2024).The Sources and Atmospheric Processes of Strong Light-Absorbing Components in Water Soluble Brown Carbon: Insights From a Multi-Proxy Study of PM2.5 in 10 Chinese Cities.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,129(2),17. |
MLA | Mo, Yangzhi,et al."The Sources and Atmospheric Processes of Strong Light-Absorbing Components in Water Soluble Brown Carbon: Insights From a Multi-Proxy Study of PM2.5 in 10 Chinese Cities".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 129.2(2024):17. |
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