DOI: 10.1016/j.atmosenv.2018.02.033
Scopus记录号: 2-s2.0-85042429773
论文题名: Molecular characterization of primary humic-like substances in fine smoke particles by thermochemolysis–gas chromatography–mass spectrometry
作者: Fan X ; , Wei S ; , Zhu M ; , Song J ; , Peng P
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
卷: 180 起始页码: 1
结束页码: 10
语种: 英语
英文关键词: Combustion processes
; Molecular markers
; Molecular structures
; Primary humic-like substances (HULIS)
; Thermochemolysis
Scopus关键词: Aromatic compounds
; Aromatization
; Biomass
; Characterization
; Chromatography
; Coal combustion
; Combustion
; Esters
; Gas chromatography
; Lignin
; Lipids
; Mass spectrometry
; Molecular structure
; Spectrometry
; Cellulose structures
; Combustion pro-cess
; Humic-like substances
; Molecular characterization
; Molecular marker
; Polysaccharide derivatives
; Tetramethyl ammonium hydroxide
; Thermochemolysis
; Atmospheric aerosols
; aliphatic acid methyl ester
; aromatic acid methyl ester
; aromatic compound
; benzyl methyl ether
; cellulose
; coal
; diterpenoid
; lignin
; molecular marker
; nitrogen derivative
; polysaccharide
; pyridine derivative
; pyrrole derivative
; tetramethylammonium hydroxide
; unclassified drug
; analytic method
; Article
; biomass
; chemical composition
; chemical structure
; combustion
; humic substance
; mass fragmentography
; particle size
; pine
; priority journal
; pyrolysis
; secondary organic aerosol
; smoke
; thermochemolysis
; Aromatic Acids
; Biomass
; Chemical Analysis
; Gas Chromatography
; Mass Spectrometers
; Molecular Structure
; Polysaccharides
; Smoke
; Zea mays
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: In this study, the molecular structures of primary humic-like substances (HULIS) in fine smoke particles emitted from the combustion of biomass materials (including rice straw, corn straw, and pine branches) and coal, and atmospheric HULIS were determined by off-line tetramethylammonium hydroxide thermochemolysis coupled with gas chromatography and mass spectrometry (TMAH-GC/MS). A total of 89 pyrolysates were identified by the thermochemolysis of primary and atmospheric HULIS. The main groups were polysaccharide derivatives, N-containing compounds, lignin derivatives, aromatic acid methyl ester, aliphatic acid methyl ester, and diterpenoid derivatives. Both the type and distribution of pyrolysates among primary HULIS were comparable to those in atmospheric HULIS. This indicates that primary HULIS from combustion processes are important contributors to atmospheric HULIS. Some distinct differences were also observed. The aromatic compounds, including lignin derivatives and aromatic acid methyl ester, were the major pyrolysates (53.0%–84.9%) in all HULIS fractions, suggesting that primary HULIS significantly contributed aromatic structures to atmospheric HULIS. In addition, primary HULIS from biomass burning (BB) contained a relatively high abundance of lignin and polysaccharide derivatives, which is consistent with the large amounts of lignin and cellulose structures contained in biomass materials. Aliphatic acid methyl ester and benzyl methyl ether were prominent pyrolysates in atmospheric HULIS. Moreover, some molecular markers of specific sources were obtained from the thermochemolysis of primary and atmospheric HULIS. For example, polysaccharide derivatives, pyridine and pyrrole derivatives, and lignin derivatives can be used as tracers of fresh HULIS emitted from BB. Diterpenoid derivatives are important markers of HULIS from pine wood combustion sources. Finally, the differences in pyrolysate types and the distributions between primary and atmospheric HULIS suggested that the primary HULIS would undergo many atmospheric processes to reconstruct the macromolecular organic matter in atmospheric aerosols. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82925
Appears in Collections: 气候变化事实与影响
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作者单位: State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, China; College of Resource and Environment, Anhui Science and Technology University, Anhui, China; Graduate School of Chinese Academy of Sciences, Beijing, China
Recommended Citation:
Fan X,, Wei S,, Zhu M,et al. Molecular characterization of primary humic-like substances in fine smoke particles by thermochemolysis–gas chromatography–mass spectrometry[J]. Atmospheric Environment,2018-01-01,180