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DOI	10.5194/acp-21-17953-2021
	Diverse mixing states of amine-containing single particles in Nanjing, China
	Zhong Q.E.; Cheng C.; Wang Z.; Li L.; Li M.; Ge D.; Wang L.; Li Y.; Nie W.; Chi X.; Ding A.; Yang S.; Chen D.; Zhou Z.
发表日期	2021
ISSN	1680-7316
起始页码	17953
结束页码	17967
卷号	21 期号:23
英文摘要	The mixing states of particulate amines with different chemical components are of great significance in studying the formation and evolution processes of amine-containing particles. In this work, the mixing states of single particles containing trimethylamine (TMA) and diethylamine (DEA) are investigated using a high-performance single-particle aerosol mass spectrometer located in Nanjing, China, in September 2019. TMA-and DEA-containing particles accounted for 22.8 % and 5.5 % of the total detected single particles, respectively. The particle count and abundance of the TMA-containing particles in the total particles notably increased with enhancement of ambient relative humidity (RH), while the DEA-containing particles showed no increase under a high RH. This result suggested the important role of RH in the formation of particulate TMA. Significant enrichments of secondary organic species, including 43C2H3O+, 26CN-, 42CNO-, 73C3H5O2-, and 89HC2O4-, were found in DEA-containing particles, indicating that DEA-containing particles were closely associated with the aging of secondary organics. The differential mass spectra of the DEA-containing particles showed a much higher abundance of nitrate and organic nitrogen species during the nighttime than during the daytime, which suggested that the nighttime production of particulate DEA might be associated with reactions of gaseous DEA with HNO3 and/or particulate nitrate. In the daytime, the decrease in DEA-containing particles was observed with the enrichment of oxalate and glyoxylate, which suggested a substantial impact of photochemistry on the aging process of DEA-containing particles. Furthermore, more than 80 % of TMA-and DEA-containing particles internally mixed with nitrate, while the abundance of sulfate was higher in the DEA-containing particles (79.3 %) than in the TMA-containing particles (55.3 %). This suggested that particulate DEA existed both as nitrate and sulfate aminium salts, while the particulate TMA primarily presented as nitrate aminium salt. The different mixing states of the TMA-and DEA-containing particles suggested their different formation processes and various influencing factors, which are difficult to investigate using bulk analysis. These results provide insights into the discriminated fates of organics during the evolution process in aerosols, which helps to illustrate the behavior of secondary organic aerosols. © 2021 Qi En Zhong et al.
语种	英语
scopus关键词	abundance; aerosol; nitrate; organic nitrogen; oxalate; photochemistry; sulfate; China; Jiangsu; Nanjing [Jiangsu]
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/246380
作者单位	Institute of Mass Spectrometry and Atmospheric Environment, Guangdong Provincial Engineering Research Center, On-line Source Apportionment System Of Air Pollution, Jinan University, Guangzhou, 510632, China; Guangdong-Hong Kong-Macau Joint Laboratory, Collaborative Innovation for Environmental Quality, Guangzhou, 510632, China; Institute of Resources Utilization and Rare Earth Development, Guangdong Academy of Sciences, Guangzhou, 510651, China; Joint International Research Laboratory of Atmospheric and Earth System Sciences (JirLATEST), School of Atmospheric Sciences, Nanjing University, Nanjing, 210023, China; Collaborative Innovation Center of Climate Change, Jiangsu Province, Nanjing, 210023, China; Institute for Environment and Climate Research, Jinan University, Guangzhou, 510632, China; State Environmental Protection Key Laboratory of Regional Air Quality Monitoring, Guangdong Environmental Monitoring Center, Guangzhou, 510308, China
推荐引用方式 GB/T 7714	Zhong Q.E.,Cheng C.,Wang Z.,et al. Diverse mixing states of amine-containing single particles in Nanjing, China[J],2021,21(23).
APA	Zhong Q.E..,Cheng C..,Wang Z..,Li L..,Li M..,...&Zhou Z..(2021).Diverse mixing states of amine-containing single particles in Nanjing, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,21(23).
MLA	Zhong Q.E.,et al."Diverse mixing states of amine-containing single particles in Nanjing, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 21.23(2021).