The important contribution of secondary formation and biomass burning to oxidized organic nitrogen (OON) in a polluted urban area: insights from in situ measurements of a chemical ionization mass spectrometer (CIMS)
文献类型：期刊论文
| 作者 | Cai, Yiyu1,7,8,9,10; Ye, Chenshuo6; Chen, Wei1,7,8,9,10; Hu, Weiwei1,8,9,10 ; Song, Wei1,8,9; Peng, Yuwen4,5; Huang, Shan4,5; Qi, Jipeng4,5; Wang, Sihang4,5; Wang, Chaomin4,5
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| 刊名 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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| 出版日期 | 2023-08-09 |
| 卷号 | 23期号:15页码:8855-8877 |
| ISSN号 | 1680-7316 |
| DOI | 10.5194/acp-23-8855-2023 |
| 英文摘要 | To investigate the sources and formation mechanism of oxidized organic nitrogen (OON), field measurements of OON were conducted using an iodide-adduct chemical ionization mass spectrometer equipped with a Filter Inlet for Gases and AEROsols (FIGAERO-CIMS) during fall of 2018 in the megacity of Guangzhou, China. Using levoglucosan as a tracer of biomass burning emissions, the results show that biomass burning (49 +/- 23 %) and secondary formation (51 +/- 23 %) accounted for comparable fractions to the total particle-phase OON (pOON) but 24 +/- 25% and 76 +/- 25% to the gas-phase OON (gOON), respectively, signifying the important contribution of biomass burning to pOON and secondary formation to gOON in this urban area. Calculations of production rates of gOON indicated that hydroxyl radical (42 %) and nitrate radical (NO3) (49 %) oxidation pathways potentially dominated the secondary formation of gOON. A high concentration of NO3 radicals during the afternoon was observed, demonstrating that the daytime NO3 oxidation might be more important than the previous recognition. Monoterpenes, found to be major precursors of secondary gOON, were mainly from anthropogenic emissions in this urban area. The ratio of secondary pOON to O-x ([O-x] = [O-3] + [NO2]) increased as a function of relative humidity and aerosol surface area, indicating that heterogeneous reaction might be an important formation pathway for secondary pOON. Finally, the highly oxidized gOON and pOON with 6 to 11 oxygen atoms were observed, highlighting the complex secondary reaction processes of OON in the ambient air. Overall, our results improve the understanding of the sources and dynamic variation of OON in the urban atmosphere. |
| WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:001044897100001 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/74743]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Hu, Weiwei; Yuan, Bin |
| 作者单位 | 1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Peking Univ, Sch Environm & Energy, Shenzhen Grad Sch, Key Lab Urban Habitat Environm Sci, Shenzhen 518055, Peoples R China 3.Qilu Univ Technol, Sch Environm Sci & Engn, Jinan 250353, Peoples R China 4.Guangdong Hongkong Macau Joint Lab Collaborat Inno, Guangzhou 511443, Peoples R China 5.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 6.Guangdong Prov Acad Environm Sci, Joint Lab Atmospher Photochem, Guangzhou 510045, Peoples R China 7.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 8.Chinese Acad Sci, Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 9.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong 510640, Peoples R China 10.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cai, Yiyu,Ye, Chenshuo,Chen, Wei,et al. The important contribution of secondary formation and biomass burning to oxidized organic nitrogen (OON) in a polluted urban area: insights from in situ measurements of a chemical ionization mass spectrometer (CIMS)[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2023,23(15):8855-8877. |
| APA | Cai, Yiyu.,Ye, Chenshuo.,Chen, Wei.,Hu, Weiwei.,Song, Wei.,...&Wang, Xinming.(2023).The important contribution of secondary formation and biomass burning to oxidized organic nitrogen (OON) in a polluted urban area: insights from in situ measurements of a chemical ionization mass spectrometer (CIMS).ATMOSPHERIC CHEMISTRY AND PHYSICS,23(15),8855-8877. |
| MLA | Cai, Yiyu,et al."The important contribution of secondary formation and biomass burning to oxidized organic nitrogen (OON) in a polluted urban area: insights from in situ measurements of a chemical ionization mass spectrometer (CIMS)".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.15(2023):8855-8877. |
入库方式： OAI收割
来源：广州地球化学研究所
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