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Quantitative Determination of BTEX and Total Aromatic Compounds in Gasoline by Comprehensive Two-Dimensional Gas Chromatography (GC×GC)

✍ Scribed by Frysinger, Glenn S. ;Gaines, Richard B. ;Ledford, Edward B.

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 66 KB
Volume: 22
Category: Article
ISSN: 0935-6304
DOI: 10.1002/(sici)1521-4168(19990401)22:4<195::aid-jhrc195>3.0.co;2-7

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✦ Synopsis

Comprehensive two-dimensional gas chromatography (GC6GC) has been applied to the quantitative analysis of benzene, toluene, ethylbenzene, xylenes (BTEX), and all heavier aromatic compounds in gasoline. The two-dimensional chromatographic separation used volatility selection on the first-dimension column and polarity selection on the second-dimension column. In the resulting GC6GC chromatogram, aromatic species were resolved from other compound classes. Moreover, structurally related aromatics were grouped in a manner that facilitated identification and integration. The response of a flame ionization detector to each major aromatic group in gasoline was calibrated using internal standards. Quantitation produced results directly comparable with ASTM standard methods. The present GC6GC method can be expanded to analyze other gasoline components.

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