Comprehensive two-dimensional gas chromatography using large sample volume injection for the determination of polynuclear aromatic hydrocarbons in complex matrices

Cavagnino, Daniela; Magni, Paolo; Zilioli, Giacinto; Trestianu, S.

doi:10.1016/j.chroma.2003.07.017

Cited by 34 publications

(23 citation statements)

References 12 publications

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“…0.1 mol dm -3 chromium(III) acetylacetonate as a relaxation agent to induce the spinlattice relaxation time. 2,3 The measuring conditions for quantitative 13 C NMR experiments were: 18 kHz sweep width; 8.70 µs pulse width; 10 s relaxation delay; 1024 scans. The phase and base line of the resulting spectra were manually adjusted.…”

Section: Nmr Spectroscopymentioning

confidence: 99%

“…All the 13 C NMR spectra were recorded on a Bruker Avance 300 NMR spectrometer operating at 300 MHz for 1 H and 75 MHz for 13 C using a C/H dual 5 mm probe. The experiments were performed at room temperature.…”

Section: Nmr Spectroscopymentioning

confidence: 99%

“…For 13 C NMR experiments an inverse gated decoupling sequence was used to suppress unwanted nuclear Overhauser enhancement (NOE). Sample solution was prepared (w = 50 %) in deuterated chloroform (99.8 % D) containing approx.…”

Section: Nmr Spectroscopymentioning

confidence: 99%

“…9,10 Comprehensive two dimensional GC×GC is an analytical technique which provides powerful multidimensional separation and detection of low concentrations of normal paraffins in insoluble sediments. [11][12][13][14] This can help in determining reaction pathways and chemical mechanisms involved in oxidative degradation of diesel fuels. …”

Section: Introductionmentioning

confidence: 99%

“…Hence, it is the aim of this paper to analyze several commercial diesel fuel samples with respect to changes in hydrocarbon composition during the process of oxidation especially to composition of sediments. Although NMR spectroscopy has been used in fuel analysis 2,3 we believe that a combination of 13 C NMR and comprehensive GC×GC experiments can provide more details for better understanding of the relationships between chemical composition of diesel fuels before and after oxidation under conditions described in the standard ISO 12205 procedure. 1 Chemical composition of diesel fuels is meant in terms of the percentage of different types of hydrocarbons present.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

The Use of 13C NMR Spectroscopy and Comprehensive Two-dimensional Gas Chromatography, GC×GC, for Identification of Compounds Involved in Diesel Fuel Oxidative Behavior

Vuković¹,

Telen²,

Srića³

et al. 2011

Croat. Chem. Acta

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Abstract. An approach has been proposed combining one dimensional inverse gated 13 C NMR spectroscopy and a comprehensive two dimensional gas chromatography (GC×GC) to analyze diesel fuels prior and after oxidation under the standard conditions. Classes of hydrocarbons present before and after oxidation have been identified and quantified. A decrease in aromatic iso-and n-paraffinic hydrocarbons and an increase in the total saturated hydrocarbons have been observed after oxidation. In that respect NMR spectroscopy has potential to be used as standard method for determination of oxidation stability. Furthermore, GC×GC has been applied to identify compounds involved in the formation of sediments during oxidation. Obtained results have shown that hydrocarbon composition, especially the normal paraffin content play a role in the formation of sediments in these distillate fuels. This is important since sediments may influence the quality of diesel fuels. (doi: 10.5562/cca1874)

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Section: Nmr Spectroscopymentioning

confidence: 99%

Section: Nmr Spectroscopymentioning

confidence: 99%

Section: Nmr Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Use of 13C NMR Spectroscopy and Comprehensive Two-dimensional Gas Chromatography, GC×GC, for Identification of Compounds Involved in Diesel Fuel Oxidative Behavior

Vuković¹,

Telen²,

Srića³

et al. 2011

Croat. Chem. Acta

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Chromatographic Methods

Bertoncini

Thiébaut

Courtiade

et al. 2012

Characterization of Solid Materials and Heterogeneous Catalysts

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Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

Bordajandi¹,

Dabrio

Ulberth

et al. 2008

J of Separation Science

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European legislation has recently established a list of 15 priority polycyclic aromatic hydrocarbons (PAHs) to be monitored in foodstuff. Thus, the accurate determination of these compounds has become a highly relevant issue. The fact that some of these European Union (EU) PAHs differ from those typically analysed, requires the re-evaluation of the instrumental conditions for the proper determination of the new target compounds. In this study, the influence of the stationary phase and dimensions of the GC capillary column on the chromatographic resolution of the 15 EU PAHs has been investigated. Apolar (DB-5 type) and medium polar (DB-17 type) stationary phases with different lengths and film thickness have been evaluated for the separation of the target compounds, with special emphasis on those coelutions involving isomers such as the three benzofluoranthenes included in the EU PAHs. In addition, the influence of the injection technique and the column dimensions on the recovery of the high molecular mass PAHs has been studied. A programmable temperature vaporising (PTV) injector has been used in three different operational modes and the results were compared to those obtained using on-column injection. The experimental parameters involved in the injection step were optimised by using experimental design.

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Comprehensive two-dimensional gas chromatography using large sample volume injection for the determination of polynuclear aromatic hydrocarbons in complex matrices

Cited by 34 publications

References 12 publications

The Use of 13C NMR Spectroscopy and Comprehensive Two-dimensional Gas Chromatography, GC×GC, for Identification of Compounds Involved in Diesel Fuel Oxidative Behavior

The Use of 13C NMR Spectroscopy and Comprehensive Two-dimensional Gas Chromatography, GC×GC, for Identification of Compounds Involved in Diesel Fuel Oxidative Behavior

Chromatographic Methods

Optimisation of the GC‐MS conditions for the determination of the 15 EU foodstuff priority polycyclic aromatic hydrocarbons

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