Different formation pathways of nitrogen-containing organic compounds in aerosols and fog water in northern China
文献类型：期刊论文
| 作者 | Sun, Wei2,3,7; Hu, Xiaodong6; Fu, Yuzhen1; Zhang, Guohua2,3,7 ; Zhu, Yujiao4; Wang, Xinfeng4; Yan, Caiqing4; Xue, Likun4; Meng, He5; Jiang, Bin2,3,7
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| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2024-06-18 |
| 卷号 | 24期号:12页码:6987-6999 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-24-6987-2024 |
| 英文摘要 | While aqueous-phase processing is known to contribute to the formation of nitrogen-containing organic compounds (NOCs), the specific pathways involved remain poorly understood. In this study, we aimed to characterize the NOCs present in both pre-fog aerosols and fog water collected at a suburban site in northern China. Fourier-transform ion cyclotron resonance mass spectrometry was utilized to analyze the molecular composition of NOCs in both negative and positive modes of electrospray ionization (ESI - and ESI + ). In both pre-fog aerosols and fog water samples, NOCs constituted a significant portion, accounting for over 60 % of all assigned formulas in ESI - and more than 80 % in ESI + . By comparing the molecular composition of NOCs originating from biomass burning, coal combustion, and vehicle emissions, we identified that 72.3 % of NOCs in pre-fog aerosols were attributed to primary anthropogenic sources (pNOCs), while the remaining NOCs were categorized as secondary NOCs formed within the aerosols (saNOCs). Unique NOCs found in fog water were classified as secondary NOCs formed within the fog water (sfNOCs). Through a comprehensive "precursor-product pair" screening involving 39 reaction pathways, we observed that the nitration reaction, the amine pathway, and the intramolecular N-heterocycle pathway of NH 3 addition reactions contributed 43.6 %, 22.1 %, and 11.6 % of saNOCs, respectively. In contrast, these pathways contributed 26.8 %, 28.4 %, and 29.7 % of sfNOCs, respectively. This disparity in formation pathways is likely influenced by the diverse precursors, the aqueous acidity, and the gas-phase species partitioning. Correspondingly, saNOCs were found to contain a higher abundance of carbohydrate-like and highly oxygenated compounds with two nitrogen atoms compared to pNOCs. Conversely, sfNOCs exhibited a higher content of lipid-like compounds with fewer oxygen atoms. These results underscore the distinct secondary processes contributing to the diversity of NOCs in aerosols and fog water, which may lead to their different climate effects. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001249999300001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78354]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Zhang, Guohua; Bi, Xinhui |
| 作者单位 | 1.Hainan Res Acad Environm Sci, Haikou 571126, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Key Lab Environm Protect & Resources Uti, Guangzhou 510640, Peoples R China 4.Shandong Univ, Environm Res Inst, Qingdao 266237, Peoples R China 5.Qingdao Ecoenvironm Monitoring Ctr Shandong Prov, Qingdao 266003, Peoples R China 6.Hong Kong Univ Sci & Technol Guangzhou, Jiangmen Lab Carbon Sci & Technol, Jiangmen 529199, Peoples R China 7.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Wei,Hu, Xiaodong,Fu, Yuzhen,et al. Different formation pathways of nitrogen-containing organic compounds in aerosols and fog water in northern China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2024,24(12):6987-6999. |
| APA | Sun, Wei.,Hu, Xiaodong.,Fu, Yuzhen.,Zhang, Guohua.,Zhu, Yujiao.,...&Bi, Xinhui.(2024).Different formation pathways of nitrogen-containing organic compounds in aerosols and fog water in northern China.ATMOSPHERIC CHEMISTRY AND PHYSICS,24(12),6987-6999. |
| MLA | Sun, Wei,et al."Different formation pathways of nitrogen-containing organic compounds in aerosols and fog water in northern China".ATMOSPHERIC CHEMISTRY AND PHYSICS 24.12(2024):6987-6999. |
入库方式： OAI收割
来源：广州地球化学研究所
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