DOI: 10.1016/j.epsl.2018.05.014
Scopus记录号: 2-s2.0-85047387026
论文题名: Comparison of soluble and insoluble organic matter in analogues of Titan's aerosols
作者: Maillard J. ; Carrasco N. ; Schmitz-Afonso I. ; Gautier T. ; Afonso C.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 495 起始页码: 185
结束页码: 191
语种: 英语
英文关键词: ion cyclotron resonance
; mass spectrometry
; organic matter
; tholins
; Titan's atmosphere
; Van Krevelen diagram
Scopus关键词: Aerosols
; Atmospheric chemistry
; Biogeochemistry
; Biological materials
; Cyclotrons
; Desorption
; Electron cyclotron resonance
; Mass spectrometry
; Moon
; Organic compounds
; Polymers
; Fourier transform ion cyclotron resonance mass spectrometers
; Insoluble organic matter
; Ion cyclotron resonance
; Laser desorption/ionization
; Molecular compositions
; tholins
; Titan's atmosphere
; Van Krevelen diagram
; Earth atmosphere
英文摘要: Titan, the biggest moon of Saturn, has a thick atmosphere which presents similarities with the one thought to be on Earth at its beginning. The study of Titan's photochemical haze is thus a precious tool in gaining knowledge of the primitive atmosphere of Earth. The chemistry occurring in Titan's atmosphere and the exact processes at act in the formation of the hazes remain largely unknown. The production of analogs samples on Earth has proved to be a useful tool to improve our knowledge of the aerosols formation on Titan. Such solid organic analogs samples, named tholins, were produced with the PAMPRE experiment (French acronym for Aerosols Microgravity Production by Reactive Plasma). PAMPRE tholins were found to be mostly insoluble, with only one-third of the bulk sample that can be dissolved in methanol. This partial solubility limited the previous studies in mass spectrometry, which were done only on the soluble fraction. The goal of the present study is to compare the two fractions of PAMPRE's tholins (insoluble and soluble) using a ultra-high resolution Fourier transform ion cyclotron resonance mass spectrometer (FTICR) equipped with a laser desorption/ionization source. Using modified Van Krevelen diagrams, we compare the global distribution of the molecules within the samples according to their Hydrogen/Carbon ratio and Nitrogen/Carbon ratio. Major differences are observed in the molecular composition of the soluble and the insoluble fraction. The soluble fraction of tholins was previously identified as a set of polymers of average formula (C2H3N)n. In this work we observe that the insoluble fraction of tholins is comprised of a significantly different set of polymers with an average composition of (C4H3N2)n. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109824
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
There are no files associated with this item.
作者单位: LATMOS/IPSL, Université Versailles St Quentin, UPMC Université Paris 06, CNRS, 11 blvd d'Alembert, Guyancourt, F-78280, France; Université de Rouen, Laboratoire COBRA UMR 6014 & FR 3038, IRCOF, 1 Rue Tesnière, Mont St Aignan Cedex, 76821, France
Recommended Citation:
Maillard J.,Carrasco N.,Schmitz-Afonso I.,et al. Comparison of soluble and insoluble organic matter in analogues of Titan's aerosols[J]. Earth and Planetary Science Letters,2018-01-01,495