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)

doi:10.5194/acp-23-8855-2023

	Cai, Yiyu 1,2,3,4,5; Ye, Chenshuo 6; Chen, Wei 1,2,3,4,5; Hu, Weiwei1,2,3,4 ; Song, Wei 1,3,4; Peng, Yuwen 7,8; Huang, Shan 7,8; Qi, Jipeng 7,8; Wang, Sihang 7,8; Wang, Chaomin 7,8; Wu, Caihong 7,8; Wang, Zelong 7,8; Wang, Baolin 9; Huang, Xiaofeng 10; He, Lingyan 10; Gligorovski, Sasho 1,2,4; Yuan, Bin 7,8; Shao, Min 7,8; Wang, Xinming1,2,3,4
	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)
Source Publication	ATMOSPHERIC CHEMISTRY AND PHYSICS
ISSN	1680-7316
	2023-08-09
Volume	23 Issue:15 Pages:8855-8877
DOI	10.5194/acp-23-8855-2023
Language	英语
WOS Research Area	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Abstract	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 ID	WOS:001044897100001
Indexed By	SCI
Citation statistics	Cited Times:5[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/74744
Collection	有机地球化学国家重点实验室
Corresponding Author	Hu, Weiwei; Yuan, Bin
Affiliation	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong 510640, Peoples R China 4.Chinese Acad Sci, Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Guangdong Prov Acad Environm Sci, Joint Lab Atmospher Photochem, Guangzhou 510045, Peoples R China 7.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 8.Guangdong Hongkong Macau Joint Lab Collaborat Inno, Guangzhou 511443, Peoples R China 9.Qilu Univ Technol, Sch Environm Sci & Engn, Jinan 250353, Peoples R China 10.Peking Univ, Sch Environm & Energy, Shenzhen Grad Sch, Key Lab Urban Habitat Environm Sci, Shenzhen 518055, Peoples R China
Recommended Citation 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.

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