Experimental study on the imidazoles of aqueous secondary organic aerosol formed from reaction of methylglyoxal and ammonium sulphate

doi:10.1016/j.apr.2022.101535

	Experimental study on the imidazoles of aqueous secondary organic aerosol formed from reaction of methylglyoxal and ammonium sulphate
	Zhu, Mincong 2; Huang, Mingqiang 2; Lu, Tingting 2; Cai, Shunyou 2; Shan, Xiaobin 1; Sheng, Liusi 1; Zhao, Weixiong 3; Gu, Xuejun 3; Zhang, Weijun 3
刊名	ATMOSPHERIC POLLUTION RESEARCH
	2022-09-01
卷号	13
关键词	Methylglyoxal Ammonium sulphate Aqueous secondary organic aerosol Imidazole compounds Brown carbon
ISSN号	1309-1042
DOI	10.1016/j.apr.2022.101535
通讯作者	Huang, Mingqiang(huangmingqiang@mnnu.edu.cn) ; Zhang, Weijun(wjzhang@aiofm.ac.cn)
英文摘要	Imidazole and its derivatives are the main heterocyclic nitrogen-containing brown carbon constituents in aerosol particles. Imidazoles of aqueous secondary organic aerosol (aqSOA) particles formed from the reaction of methylglyoxal and ammonium sulphate ((NH4)2SO4) are detected by vacuum ultraviolet photoionization aerosol mass spectrometer (VUV-PIMS) in real-time and verified off-line with optical spectrometry in current study. The experimental results showed that the single photon ionization mass spectrum of aqSOA particles measured by VUV-PIMS emerged the molecular ion peaks at m/z = 68, 82 and 110. While, the extraction solution of aqSOA particles detected by off-line techniques demonstrated that the characteristic peaks at 217 and 282 nm appeared in the UV-Vis spectrum; the strong emission in 405-480 nm with maximum emission wavelength at 435 nm contained in the 3D fluorescence spectra; and the chemical shift peaks of hydrogen atoms on N-H, C--C and C--N bond on imidazole ring and methyl group arised in the( 1)H-NMR spectrum. In view of these spectral in-formation, 4-methyl-imidazole and 4-methyl-imidazole-2-carbaldehyde are determined as the principal products of the aqueous reaction between methylglyoxal and (NH4)2SO4. The possible reaction mechanism leading to the generation of imidazole compounds are also discussed. These will help to understand the formation process of imidazole compounds in atmospheric aerosol particles, and provide experimental basis for the model mechanism study of aqSOA particles.
资助项目	National Natural Science Foundation of China[41575118] ; Natural Science Foundation of Fujian Province of China[2020J02044] ; Natural Science Foundation of Fujian Province of China[2021J01987] ; Youth Science and Technology Project of Fujian Provincial Department of Education[JAT200340]
WOS关键词	MASS-SPECTROMETRY ; POTENTIAL PHOTOSENSITIZERS ; PHASE REACTION ; GLYOXAL ; IMIDAZOLE-2-CARBOXALDEHYDE ; PRODUCTS ; IDENTIFICATION ; CHEMISTRY ; DROPLETS ; H-1-NMR
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	TURKISH NATL COMMITTEE AIR POLLUTION RES & CONTROL-TUNCAP
WOS记录号	WOS:000862954700003
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Fujian Province of China ; Youth Science and Technology Project of Fujian Provincial Department of Education
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/129323]
专题	中国科学院合肥物质科学研究院
通讯作者	Huang, Mingqiang; Zhang, Weijun
作者单位	1.Univ Sci & Technol China, Natl Synchrotron Radiat Lab, Hefei 230031, Peoples R China 2.Minnan Normal Univ, Coll Chem & Chem Engn & Environm, Fujian Prov Key Lab Modern Analyt Sci & Separat Te, Zhangzhou 363000, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Lab Atmospher Phys Chem, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Mincong,Huang, Mingqiang,Lu, Tingting,et al. Experimental study on the imidazoles of aqueous secondary organic aerosol formed from reaction of methylglyoxal and ammonium sulphate[J]. ATMOSPHERIC POLLUTION RESEARCH,2022,13.
APA	Zhu, Mincong.,Huang, Mingqiang.,Lu, Tingting.,Cai, Shunyou.,Shan, Xiaobin.,...&Zhang, Weijun.(2022).Experimental study on the imidazoles of aqueous secondary organic aerosol formed from reaction of methylglyoxal and ammonium sulphate.ATMOSPHERIC POLLUTION RESEARCH,13.
MLA	Zhu, Mincong,et al."Experimental study on the imidazoles of aqueous secondary organic aerosol formed from reaction of methylglyoxal and ammonium sulphate".ATMOSPHERIC POLLUTION RESEARCH 13(2022).