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  2. 烟台海岸带研究所
  3. 中国科学院烟台海岸带研究所
  4. 中科院海岸带环境过程与生态修复重点实验室
Molecular Signatures and Sources of Fluorescent Components in Atmospheric Organic Matter in South China

文献类型：期刊论文

作者Jiang, Hongxing2,3,4,5; Tang, Jiao2,4,5; Li, Jun2,4,5; Zhao, Shizhen2,4,5; Mo, Yangzhi2,4,5; Tian, Chongguo1; Zhang, Xiangyun2,4,5; Jiang, Bin2,4,5; Liao, Yuhong2,4,5; Chen, Yingjun3
刊名ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
出版日期2022-10-18
页码8
ISSN号2328-8930
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.
WOS关键词PEARL RIVER DELTA ; RESOLUTION MASS-SPECTROMETRY ; HUMIC-LIKE SUBSTANCES ; OPTICAL-PROPERTIES ; LIGHT-ABSORPTION ; AEROSOL COMPOSITION ; BROWN CARBON ; URBAN ; MARINE ; SPECTROSCOPY
WOS研究方向Engineering ; Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000874620900001
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
源URL[http://ir.yic.ac.cn/handle/133337/31945]  
专题烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室
烟台海岸带研究所_近岸生态与环境实验室
通讯作者Li, Jun
作者单位1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
2.CAS Ctr Excellence Deep Earth Sci, 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.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
5.Chinese Acad Sci, State Key Lab Organ Geochem, Guangzhou 510640, 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.

入库方式： OAI收割

来源：烟台海岸带研究所

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