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  Impact of Different Ionization Methods on the Molecular Assignments of Asphaltenes by FT-ICR Mass Spectrometry

Gaspar, A., Zellermann, E., Lababidi, S., Reece, J., & Schrader, W. (2012). Impact of Different Ionization Methods on the Molecular Assignments of Asphaltenes by FT-ICR Mass Spectrometry. Analytical Chemistry, 84(12), 5257-5267. doi:10.1021/ac300133p.

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 Creators:
Gaspar, Andras1, Author              
Zellermann, Elio1, Author              
Lababidi, Sami1, Author              
Reece, Jennifer1, Author              
Schrader, Wolfgang1, Author              
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1Service Department Schrader (MS), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445629              

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 Abstract: Over the years, ultrahigh resolution mass spectrometry has successfully illustrated the extreme complexity of crude oil and related solubility or polarity based fractions on a molecular level. However, the applied ionization technique greatly influences the outcome and may provide misleading information. In this work, we investigate the atmospheric pressure laser ionization (APLI) technique coupled with Fourier transform ion cyclotron resonance mass spectrometer to analyze the asphaltene fraction of a crude oil. These results were compared to data obtained by using other existing atmospheric pressure ionization methods. Furthermore elemental analysis and solid state NMR were used to obtain the bulk characteristics of the asphaltene sample. The results of the different ionization techniques were compared with the bulk properties in order to describe the potential discrimination effects of the ionization techniques that were observed. The results showed that APLI expands the range of the assigned molecules, while retaining information already observed with the generally used ion sources.

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Language(s): eng - English
 Dates: 2012-01-132012-05-172012-06-062012-06-19
 Publication Status: Published in print
 Pages: 11
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1021/ac300133p
 Degree: -

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Title: Analytical Chemistry
  Abbreviation : Anal. Chem.
Source Genre: Journal
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Publ. Info: Washington, D.C. : American Chemical Society
Pages: - Volume / Issue: 84 (12) Sequence Number: - Start / End Page: 5257 - 5267 Identifier: ISSN: 0003-2700
CoNE: https://pure.mpg.de/cone/journals/resource/111032812862552