Published:Journal of Chromatographic Science,
ISSN 0021-9665 Volume
45, Number 10, November/December 2007, pp. 683-689
Physical and Chemical Characterization of Petroleum
Products by GC–MS
A. Mendez, R. Meneghini, and J. Lubkowitz
SEPARATION SYSTEMS Inc., 100 Nightingale Lane, Gulf Breeze, FL
32561
There is a need for reliable and fast means of
monitoring refining, conversion, and upgrading processes aiming
to increase the yield of light distillates, and thus, reducing
the oil barrel bottoms. By simultaneously utilizing the FID and
mass selective detectors while splitting the column effluent
in a controlled way, it is possible to obtain identical gas chromatograms
and total ion chromatograms from a single run. This means that
besides the intensity vs. time graphs, the intensity vs. mass
and boiling point can also be obtained. As a result, physical
and chemical characterization can be performed in a simple and
rapid manner. Experimental results on middle, heavy distillates,
and crude oil fractions show clearly the effect of upgrading
processes on the chemical composition and yields of diesel, jet
fuels, and high vacuum gasoil fractions. The methodology is fully
compliant with ASTM D-2887, D-7213, D-6352, and D7169 for simulated
distillation and the previously mentioned mass spectrometry standards.
The group type analysis correlated satisfactorily with high-performance
liquid chromatography data.
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