DOI: 10.1016/j.atmosenv.2020.117370
论文题名: Comparison of solid phase extraction methods for the measurement of humic-like substances (HULIS) in atmospheric particles
作者: Zou C. ; Li M. ; Cao T. ; Zhu M. ; Fan X. ; Peng S. ; Song J. ; Jiang B. ; Jia W. ; Yu C. ; Song H. ; Yu Z. ; Li J. ; Zhang G. ; Peng P.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 225 语种: 英语
英文关键词: Ammonia
; Aromatic compounds
; Aromatization
; Atmospheric aerosols
; Atmospheric chemistry
; Atmospheric thermodynamics
; Mass spectrometry
; Methanol
; Particles (particulate matter)
; Phase separation
; Resins
; Fourier transform ion cyclotron resonance mass spectrometry
; HLB-M
; HULIS
; Isolation
; Isolation and characterization
; Solid phase extraction method
; Suwannee River fulvic acid
; Water soluble organic compounds
; Extraction
; ammonia
; aromatic compound
; fulvic acid
; methanol
; resin
; comparative study
; concentration (composition)
; extraction method
; fulvic acid
; humic substance
; measurement method
; molecular analysis
; organic compound
; aerosol
; alkaline hydrolysis
; Article
; atmospheric dispersion
; chemical composition
; chemical structure
; comparative study
; fourier transform ion cyclotron resonance mass spectrometry
; humic substance
; light absorption
; oxidation
; priority journal
; proton nuclear magnetic resonance
; signal noise ratio
; solid phase extraction
; ultraviolet radiation
学科: HLB-M
; HLB-N
; HULIS
; Isolation
; PPL
中文摘要: Humic-like substances (HULIS) constitute a significant fraction of the water-soluble organic compounds in the environment and influence many properties of atmospheric aerosols. In this study, three solid phase extraction (SPE) methods that involve the use of hydrophilic/lipophilic balanced (HLB) resin with pure methanol (HLB-M), HLB resin with 2% (v/v) ammonia/methanol (HLB-N), and Bond Elut PPL (Priority PolLutant) resin with methanol (PPL), were compared for the isolation of HULIS from atmospheric aerosols. The HLB-N and PPL methods efficiently recovered Suwannee River fulvic acid (SRFA) and were excellent for quantifying HULIS at low levels in aerosols. All three SPE methods were favorable for the elution of aromatic and strongly UV-absorbing compounds. However, the chemical structures and molecular compositions of the HULIS isolated by the three methods showed some differences. The HULISHLB-N and HULISPPL fractions contained higher concentrations of aliphatic and aromatic C–H groups than did the HULISHLB-M fraction, indicating that relative higher content of weak polar organic species in HULIS fractions isolated by the HLB-N and PPL methods than those isolated by the HLB-M method. Moreover, the HULISHLB-N and HULISPPL were both characterized by having lower relative abundance-weighted modified aromaticity index values and higher concentrations of S-containing compounds than the HULISHLB-M, as indicated by Fourier transform ion cyclotron resonance mass spectrometry. Some N-containing structures were identified only in the HULISHLB-N, suggesting that some of HULIS molecules were changed during the HLB-N treatment. Based on these comparisons of the three methods, we found that the PPL method serves equally good as compared to other two methods, and therefore, one can utilize PPL method also for HULIS isolation and characterization. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160884
Appears in Collections: 气候变化与战略
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作者单位: State Key Laboratory of Organic Geochemistry and Guangdong Key Laboratory of Environmental Protection and Resources Utilization, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China; University of Chinese Academy of Sciences, Beijing, 100049, China; College of Resource and Environment, Anhui Science and Technology University, Fengyang, 233100, China; School of Chemistry and Environment, South China Normal University, Universities Town, Guangzhou, 510006, China
Recommended Citation:
Zou C.,Li M.,Cao T.,et al. Comparison of solid phase extraction methods for the measurement of humic-like substances (HULIS) in atmospheric particles[J]. Atmospheric Environment,2020-01-01,225