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DOI	10.1016/j.atmosenv.2019.117102
	Seasonal variation of amine-containing particles in urban Guangzhou, China
	Lian X.; Zhang G.; Lin Q.; Liu F.; Peng L.; Yang Y.; Fu Y.; Jiang F.; Bi X.; Chen D.; Wang X.; Peng P.; Sheng G.
发表日期	2020
ISSN	1352-2310
卷号	222
英文摘要	Amines are ubiquitous in the environment and pose potential impacts on atmospheric chemistry; however, their seasonal variations and atmospheric processes remain unclear. In this study, a single-particle aerosol mass spectrometer is employed to investigate the seasonal variations of amine-containing particles as well as the oxidation of trimethylamine (TMA) in the urban region of Guangzhou, China. Number fractions of the amine-containing particles exhibit distinct seasonal variations, with higher fractions in spring and summer. Four amines, namely, TMA, diethylamine (DEA), dipropylamine, and tripropylamine are observed over all the seasons. DEA and TMA are the most dominant and account for approximately 90% of all these amine-containing particles. They are mainly clustered into eight types, comprised of internally mixed organics and elemental carbon (OCEC), OC–K, EC, Metal–rich, Dust, NaK–EC, Amine–rich, and high molecular weight organic compounds. DEA and TMA distribute differently over particle types and exhibit a distinct mixing state because of their different physicochemical properties. Compared with TMA, DEA is associated with more sulfate. The possible oxidation of TMA is also investigated, and the results indicate the potential contribution of aqueous oxidation or NO3 radical oxidation to the formation of TMA oxide. Overall, the results improve the comprehension of the formation and evolution processes of amines in atmospheric environment. © 2019 Elsevier Ltd
关键词	Amine DEA Mixing state Seasonal variation TMA
语种	英语
scopus关键词	Amines; Atmospheric chemistry; Mixing; Oxidation; Physicochemical properties; Sulfur compounds; Aerosol mass spectrometers; Aqueous oxidation; Atmospheric environment; Atmospheric process; Formation and evolutions; High molecular weight; Mixing state; Seasonal variation; Ethanolamines; amine; diethylamine; dipropylamine; nitrate; nitrogen oxide; organic compound; sulfate; sulfur dioxide; trimethylamine; tripropylamine; aerosol; atmospheric chemistry; data envelopment analysis; elemental carbon; mixing; organic compound; oxidation; physicochemical property; seasonal variation; urban pollution; autumn; China; dust; humidity; molecular weight; oxidation; particle size; physical chemistry; priority journal; seasonal variation; spring; summer; wind speed; winter; China; Guangdong; Guangzhou
来源期刊	ATMOSPHERIC ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/249466
作者单位	State Key Laboratory of Organic Geochemistry and Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Taiyuan University of Technology, Taiyuan, 030024, China; Guangdong Environmental Monitoring Center, Guangzhou, 510308, China
推荐引用方式 GB/T 7714	Lian X.,Zhang G.,Lin Q.,et al. Seasonal variation of amine-containing particles in urban Guangzhou, China[J],2020,222.
APA	Lian X..,Zhang G..,Lin Q..,Liu F..,Peng L..,...&Sheng G..(2020).Seasonal variation of amine-containing particles in urban Guangzhou, China.ATMOSPHERIC ENVIRONMENT,222.
MLA	Lian X.,et al."Seasonal variation of amine-containing particles in urban Guangzhou, China".ATMOSPHERIC ENVIRONMENT 222(2020).