Multidimensional GC coupled to MS for the simultaneous determination of oxygenate compounds and BTEX in gasoline

Abstract

In the present work, carried out in relation to the European and American Directives on the quality of petrol and diesel fuels, the simultaneous determination of the oxygenate compounds and BTEX in gasoline was achieved through the use of a multidimensional GC (MDGC)/MS system, employing a Deans switch-based transfer system, with an innovative configuration; the latter enabled multiple heart-cut transfers with no hint of retention time shift, a phenomenon that can occur in MDGC, providing the possibility to achieve more then 20 different heart-cuts for the compounds of interest. In this study, 20 selected compounds were quantitatively transferred with 12 heart-cuts, from a first to a secondary column, in order to resolve primary column co-elutions. Analyte quantification and identification was achieved through a fast-scanning quadrupole mass analyzer, operated in full scan mode, in order to evaluate also the interfering compounds transferred together with the compounds of interest. The multidimensional method developed was subjected to validation. All attained data were in excellent correlation with results obtained through the UNI-EN 12177:2000, ASTM D 5580-02 and ASTM D 4815-04 MDGC methods, for the determination of benzene, BTEX and oxygenate compounds in gasoline, respectively.

Evaluation of tea tree oil quality and ascaridole: A deep study by means of chiral and multi heart-cuts multidimensional gas chromatography system coupled to mass spectrometry detection

“…group regarding the analysis of allergens in perfumes [14], chiral compounds in Pistacia lentiscus L. [23] and mandarin essential oil [22] and for the simultaneous investigation of oxygenated compounds and benzene, toluene, ethyl benzene and xylenes (BTEX) in gasoline [28]. Thirteen heart-cuts were selected from the first non-polar column to be transferred to the polar column (Fig.…”

Ultrafast gas chromatography method with direct injection for the quantitative determination of benzene, toluene, ethylbenzene, and xylenes in commercial gasoline

“…Among the modern methods of chemical analysis, undoubtedly chromatography has a place of prominence referring to the separation, identification, and quantification of chemical compounds, especially with organic volatile compounds. In direct analysis in gasoline fuel or other matrices (i.e., water), the time of BTEX compounds analysis is extremely long (around 30 min) when compared to ultrafast gas chromatography (UFGC)—the method applied and developed in this paper—consequently, faster analyses would provide an increase in laboratory productivity .…”

Detailed Chemical Analysis Using Multidimensional Gas Chromatography–Mass Spectrometry and Bulk Properties of Low-Temperature Oxidized Jet Fuels

“…It has been demonstrated previously 11,12 that sequential heart-cut techniques are wellsuited to the analysis of trace compounds in complex matrices, particularly fuels. 11,13 Previous work by Mitrevski et al 14 combined MDGC and comprehensive two-dimensional gas chromatography (GC × GC) separations, affording the advantages of each in the isolation and identification of trace oxygenated species and broad sample profiling, respectively. This study expands upon the previous work, using multiple heart-cut separations to identify a range of oxidation products, including tertiary oxidation products, which have not been reported before using a comparable technique.…”