Distribution of Polycyclic Aromatic Sulfur Heterocycles in Three Saudi Arabian Crude Oils as Determined by Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

The distribution pattern of polycyclic sulfur aromatics was established in three Saudi Arabian crude oils using a combination of liquid chromatography on a bonded Pd(II) phase and Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. The highest double bond equivalent (DBE) measured...

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Bibliographic Details
Published in:Energy & fuels 2007-03, Vol.21 (2), p.1071-1077
Main Authors: Panda, Saroj K, Schrader, Wolfgang, al-Hajji, Adnan, Andersson, Jan T
Format: Article
Language:English
Subjects:
Applied sciences
Constitution and properties of crude oils, shale oils, natural gas and bitumens. Analysis and characteristics
Crude oil, natural gas and petroleum products
Energy
Exact sciences and technology
Fuels
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Summary:The distribution pattern of polycyclic sulfur aromatics was established in three Saudi Arabian crude oils using a combination of liquid chromatography on a bonded Pd(II) phase and Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry. The highest double bond equivalent (DBE) measured was 17 for the Arabian heavy crude oil and 14 for both Arabian medium and Arabian light crudes. The high DBE number indicates the presence of a large variety of parent ring systems; knowledge of them is important in the characterization of crudes with respect to their processing properties. A higher sulfur concentration was correlated with more alkyl carbons in the aromatic compounds and with a higher DBE. A representation of the mass spectral data in a pseudogram, a form that resembles a chromatogram, is introduced to facilitate the quick visual inspection and comparison of the mass spectral data.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef060511s