Published:Journal of Chromatographic Science,
ISSN 0021-9665Volume 44,
Number 9, October 2006, pp.566-573
Comparison of
Comprehensive Two-Dimensional Gas Chromatography Coupled with Sulfur-Chemiluminescence
Detector to Standard Methods for Speciation of Sulfur-Containing
Compounds in Middle Distillates
Rosario Ruiz-Guerrero[1], Colombe Vendeuvre[1],
Didier Thiébaut[2], Fabrice Bertoncini[1], and Didier
Espinat[1]
[1]Institut Français du Pétrole, BP3, 69390 Vernaison, France and
[2]ESPCI, Laboratoire Environnement et Chimie Analytique, 10 rue Vauquelin, 75235
Paris Cedex 05, France
The monitoring of total sulfur content and
speciation of individual sulfur-containing compounds in middle
distillates is required for efficient catalyst selection and
for a better understanding of the kinetics of the reactions
involved in hydrotreament processes. Owing to higher resolution
power and enhanced sensitivity, comprehensive two-dimensional
gas chromatography (GC¥GC) hyphenated to sulfur chemiluminescence
detection (SCD) has recently evolved as a powerful tool for
improving characterization and identification of sulfur compounds.
The aim of this paper is to compare quantitatively GC¥GC–SCD
and various other methods commonly employed in the petroleum
industry, such as X-ray fluorescence, conventional GC–SCD,
and high-resolution mass spectrometry, for total sulfur content
determination and speciation analysis. Different samples of
middle distillates have been analyzed to demonstrate the high
potential and important advantages of GC¥GC–SCD for
innovative and quantitative analysis of sulfur-containing compounds.
More accurate and detailed results for benzothiophenes and
dibenzothiophenes are presented, showing that GC¥GC–SCD
should become, in the future, an essential tool for sulfur
speciation analysis.
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