Molecular characterization of dissolved organic matters in winter atmospheric fine particulate matters (PM2.5) from a coastal city of northeast China

doi:10.1016/j.scitotenv.2019.06.418

	Molecular characterization of dissolved organic matters in winter atmospheric fine particulate matters (PM2.5) from a coastal city of northeast China
	Ning, Cuiping 1,2; Gao, Yuan 1; Zhang, Haijun 1; Yu, Haoran 1,2; Wang, Lei 3; Geng, Ningbo 1; Cao, Rong 1; Chen, Jiping 1
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2019-11-01
卷号	689 页码:312-321
关键词	PM2.5 DOMs FT-ICR MS Molecular characteristic
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2019.06.418
通讯作者	Gao, Yuan(acyoyo@dicp.ac.cn)
英文摘要	Dissolved organic matters (DOM5) in fine particulate matters (PM2.5) play a crucial role in global climate change and carbon cycle. However, the chemical components of DOMs are poorly understood due to its ultra-complexity. In this study, DOM5 in atmospheric PM2.5 collected during the heating period in coastal city Dalian were analyzed with ultrahigh resolution Fourier transform ion cyclotron resonance mass spectrometer, and the molecular composition was characterized. A large number of monoisotopic molecular formulas were assigned to DOM5, which could be classified into CHO, CHNO, CHOS, and CHNOS subgroups. A total 014228 molecular formulas were identified in DOM5 collected in hazy days, while only 2313 components were found in DOM5 collected in normal days. CHO group was the dominated components in normal days, whereas CHNO group gave significantly higher contributions in hazy days. The S-containing (CHOS and CHNOS) groups posed the highest relative percentages in both normal and hazy days. In addition, potential emission sources were discussed according to the chemical component analysis. The van Kreve lent diagram illustrated that lignin-like and protein amino sugar family species were the most abundant subclasses in DOMs; and 78% and 94% of DOMs in atmospheric PM2.5 collected from Dalian could come from biogenic origins in hazy and normal days, respectively. More compounds in hazy days were derived from anthropogenic emissions. (C) 2019 Elsevier B.V. All rights reserved.
资助项目	National Natural Science Foundation of China[91643104] ; National Natural Science Foundation of China[21607152] ; National Natural Science Foundation of China[91543201]
WOS关键词	RESONANCE MASS-SPECTROMETRY ; HUMIC-LIKE SUBSTANCES ; FT-ICR-MS ; COMPREHENSIVE CHARACTERIZATION ; PINENE OZONOLYSIS ; AEROSOL ; WATER ; ORGANOSULFATES ; ELECTROSPRAY ; CARBON
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000482379400030
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173107]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Gao, Yuan
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, CAS Key Lab Separat Sci Analyt Chem, Dalian 116023, Liaoning, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Nankai Univ, Minist Educ, Key Lab Pollut Proc & Environm Criteria, Tianjin Key Lab Environm Remediat & Pollut Contro, Tianjin 300071, Peoples R China
推荐引用方式 GB/T 7714	Ning, Cuiping,Gao, Yuan,Zhang, Haijun,et al. Molecular characterization of dissolved organic matters in winter atmospheric fine particulate matters (PM2.5) from a coastal city of northeast China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,689:312-321.
APA	Ning, Cuiping.,Gao, Yuan.,Zhang, Haijun.,Yu, Haoran.,Wang, Lei.,...&Chen, Jiping.(2019).Molecular characterization of dissolved organic matters in winter atmospheric fine particulate matters (PM2.5) from a coastal city of northeast China.SCIENCE OF THE TOTAL ENVIRONMENT,689,312-321.
MLA	Ning, Cuiping,et al."Molecular characterization of dissolved organic matters in winter atmospheric fine particulate matters (PM2.5) from a coastal city of northeast China".SCIENCE OF THE TOTAL ENVIRONMENT 689(2019):312-321.