Molecular characteristics and compositions affecting light absorption features of cloud water revealed by Fourier transform ion cyclotron resonance mass spectrometry

doi:10.1016/j.atmosenv.2022.119565

	Guo, Ziyong 1,2,3,4; Sun, Wei 1,2,3,4; Hu, Xiaodong 1,2,3,4; Lin, Juying 1,2,3,4; Fu, Yuzhen 1,2,4; Peng, Xiaocong 1,2,3,4; Jiang, Bin 1,2,4; Liao, Yuhong1,2,4 ; Zhang, Guohua1,2,4,5 ; Wang, Xinming1,2,4,5 ; Peng, Ping'an 1,2,4,5; Bi, Xinhui 1,2,4,5
	Molecular characteristics and compositions affecting light absorption features of cloud water revealed by Fourier transform ion cyclotron resonance mass spectrometry
Source Publication	ATMOSPHERIC ENVIRONMENT
ISSN	1352-2310
	2023-02-15
Volume	295 Pages:6
DOI	10.1016/j.atmosenv.2022.119565
Language	英语
WOS Research Area	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
Abstract	In-cloud brown carbon (BrC) can change cloud lifetimes and radiative effects. However, little is known regarding its molecular-level composition. Herein, the molecular characteristics of water-soluble organic matter (WSOM) in cloud water were analyzed by Fourier transform ion cyclotron resonance mass spectrometry coupled with electrospray ionization (ESI) in negative mode. CHON formulas were dominant in WSOM and exhibited the highest level of aromaticity. Combined with the water-soluble BrC (WS-BrC) light-absorption coefficient (Abs365), the principal component analysis indicated that WS-BrC light absorption was mainly affected by unsaturation, aromaticity, highly oxygenated compounds, and N-containing formulas. Thirteen important po-tential WS-BrC were identified based on a random forest regression model, which could explain 61.7% of the variation in Abs365. Among them, C7H6N2O5, C8H8N2O5, C9H10N2O5, C10H12N2O5, C8H10O5S, and C8H9NO7S were identified as WS-BrC for the first time in clouds, and these may belong to dinitrophenols or nitrotyrosine, organosulfates, and their derivatives. These findings would improve our understanding of cloud WS-BrC composition.
Keyword	Brown carbon Cloud chemistry Molecular characteristics Aqueous-phase reaction FT-ICR MS
WOS ID	WOS:000920460200001
Indexed By	SCI
Citation statistics	Cited Times:1[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/72466
Collection	有机地球化学国家重点实验室
Corresponding Author	Bi, Xinhui
Affiliation	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect & Resource, Guangzhou 510640, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangdong 510640, Peoples R China
Recommended Citation GB/T 7714	Guo, Ziyong,Sun, Wei,Hu, Xiaodong,et al. Molecular characteristics and compositions affecting light absorption features of cloud water revealed by Fourier transform ion cyclotron resonance mass spectrometry[J]. ATMOSPHERIC ENVIRONMENT,2023,295:6.
APA	Guo, Ziyong.,Sun, Wei.,Hu, Xiaodong.,Lin, Juying.,Fu, Yuzhen.,...&Bi, Xinhui.(2023).Molecular characteristics and compositions affecting light absorption features of cloud water revealed by Fourier transform ion cyclotron resonance mass spectrometry.ATMOSPHERIC ENVIRONMENT,295,6.
MLA	Guo, Ziyong,et al."Molecular characteristics and compositions affecting light absorption features of cloud water revealed by Fourier transform ion cyclotron resonance mass spectrometry".ATMOSPHERIC ENVIRONMENT 295(2023):6.

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