Molecular Signatures and Sources of Fluorescent Components in Atmospheric Organic Matter in South China
Jiang, Hongxing1,2,3,4; Tang, Jiao1,2,4; Li, Jun1,2,4; Zhao, Shizhen1,2,4; Mo, Yangzhi1,2,4; Tian, Chongguo5; Zhang, Xiangyun1,2,4; Jiang, Bin1,2,4; Liao, Yuhong1,2,4; Chen, Yingjun3; Zhang, Gan1,2,4
发表期刊ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
ISSN2328-8930
2022-10-18
页码8
关键词fluorescence components FT-ICR MS PARAFAC positive and negative ESI Brown carbon sources
DOI10.1021/acs.estlett.2c00629
通讯作者Li, Jun(junli@gig.ac.cn)
英文摘要Excitation emission matrix (EEM) spectra coupled with parallel factor analysis (PARAFAC) have been used to characterize brown carbon (BrC). The molecular composition of PARAFAC components is not well understood in atmospheric science, which has impeded the accurate interpretation of the chemical changes and source apportionment of BrC using EEM-PARAFAC methods. We assigned numerous formulas identified by Fourier transform ion cyclotron resonance mass spectrometry (both negative and positive electrospray ionization modes) to each PARAFAC-derived fluorescent component (FC) in atmospheric PM2.5 samples. Obvious differences in molecular characteristics and sources were observed between atmospheric and hydrospheric FCs, indicating the need for caution in explaining the composition and source of atmospheric FC based on hydrospheric FC. Previously assigned protein-like components (C4) and less-oxidized humic-like FC (C1) were associated mainly with highly saturated photoresistant species and less-polar anthropogenic emissions. Highly oxidized humic-like FCs were associated with aromatic and highly unsaturated/phenolic compounds (high oxygen), which were potentially influenced by biomass burning and related secondary processes. The seasonal variations in light absorption were similar to those of fluorescence intensity and the degree of humification, which were influenced by highly unsaturated/phenolic compounds (high oxygen). These linkages indicated the potential of EEM-PARAFAC for investigating the changes of light absorption, molecular composition, and source of BrC.
资助机构National Natural Science Foundation of China ; National Key R&D Program of China ; Guangdong Foundation for Program of Science and Technology Research
收录类别SCI
语种英语
关键词[WOS]PEARL RIVER DELTA ; RESOLUTION MASS-SPECTROMETRY ; HUMIC-LIKE SUBSTANCES ; OPTICAL-PROPERTIES ; LIGHT-ABSORPTION ; AEROSOL COMPOSITION ; BROWN CARBON ; URBAN ; MARINE ; SPECTROSCOPY
研究领域[WOS]Engineering ; Environmental Sciences & Ecology
WOS记录号WOS:000874620900001
引用统计
被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/31946
专题中国科学院海岸带环境过程与生态修复重点实验室
中国科学院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
通讯作者Li, Jun
作者单位1.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China
2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Prov Key Lab Environm Protect & Resource, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou 510640, Peoples R China
3.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Preve, Shanghai 200433, Peoples R China
4.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China
5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Hongxing,Tang, Jiao,Li, Jun,et al. Molecular Signatures and Sources of Fluorescent Components in Atmospheric Organic Matter in South China[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,2022:8.
APA Jiang, Hongxing.,Tang, Jiao.,Li, Jun.,Zhao, Shizhen.,Mo, Yangzhi.,...&Zhang, Gan.(2022).Molecular Signatures and Sources of Fluorescent Components in Atmospheric Organic Matter in South China.ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS,8.
MLA Jiang, Hongxing,et al."Molecular Signatures and Sources of Fluorescent Components in Atmospheric Organic Matter in South China".ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS (2022):8.
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