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
文献类型：期刊论文
| 作者 | Mo, Yangzhi2,3,4,5; Li, Jun2,3,4,5; Zhong, Guangcai2,3,4,5; Zhu, Sanyuan2,3,4,5; Cheng, Zhineng2,3,4,5; Tang, Jiao2,3,4,5; Jiang, Hongxing6; Jiang, Bin2,3,4,5; Liao, Yuhong2,3,4,5; Song, Jianzhong2,3,4,5 |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
 |
| 出版日期 | 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 |
| ISSN号 | 2169-897X |
| 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. |
| WOS关键词 | HUMIC-LIKE SUBSTANCES ; MOLECULAR-SIZE DISTRIBUTION ; DISSOLVED ORGANIC-MATTER ; BIOMASS BURNING AEROSOL ; OPTICAL-PROPERTIES ; ABSORPTION PROPERTIES ; MASS-SPECTROMETRY ; ELEMENTAL CARBON ; URBAN AEROSOLS ; HULIS |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001144128800001 |
| 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 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/36457]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Li, Jun |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect, Guangzhou, Peoples R China 4.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong, Guangdong, Peoples R China 5.CAS Ctr Excellence Deep Earth Sci, Guangzhou, Peoples R China 6.Fudan Univ, Shanghai Key Lab Particle Pollut & Prevent LAP3, Dept Environm Sci & Engn, Shanghai, 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. |
入库方式： OAI收割
来源：烟台海岸带研究所
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