Mass Spectrometric Characterization of Organosulfur Compounds Using Palladium(II) as a Sensitivity-Enhancing Reagent

Electrospray ionization/ mass spectrometry (ESI/MS) experiments were performed on several polyaromatic sulfur heterocycles (PASH) in the presence of Pd(II) in order to promote charge transfer and radical cation formation. Critical experimental parameters, i.e., Pd(II)/organosulfur mole ratio, the ef...

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Bibliographic Details
Published in:Energy & fuels 2004-01, Vol.18 (1), p.16-21
Main Authors: Rudzinski, Walter E, Zhou, Kai, Luo, Xuemei
Format: Article
Language:English
Subjects:
Air pollution caused by fuel industries
Applied sciences
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Metering. Control
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Summary:Electrospray ionization/ mass spectrometry (ESI/MS) experiments were performed on several polyaromatic sulfur heterocycles (PASH) in the presence of Pd(II) in order to promote charge transfer and radical cation formation. Critical experimental parameters, i.e., Pd(II)/organosulfur mole ratio, the effect of polyaromatic hydrocarbon interferences and sample solution flow rate, and MS2 collision energy, were optimized. PASH compounds in a spiked hydrogenated oil were then identified to determine matrix effects. Selected peaks from a PASH-enriched aromatic fraction obtained from the heavy distillate of an Arabian crude were then analyzed in order to demonstrate the applicability of the method.
ISSN:0887-0624
1520-5029
DOI:10.1021/ef030115z