Overcoming the high-temperature two-dimensional gas chromatography limits to elute heavy compounds.
Overcoming high-temperature (HT) two-dimensional gas chromatography (GC × GC) limits is critical for the analysis of heavy hydrocarbons, particularly those contained in heavy petroleum fractions. To reach this goal, HT-GC × GC analysis was adapted from HT-GC Simulated Distillation (HT-GC SimDist) operating conditions as this analysis embraces compounds whose boiling point ranges from 35 °C to 700 °C and from a previous study that enabled the elution of linear alkane nC(60) and tetraaromatic compounds by HT-GC × GC. This paper shows that HT-GC × GC analysis using CO(2) cryogenic modulator and short wide bore columns with a thin film of stationary phase allows the elution of linear alkanes up to nC(68) (641 °C) as well as of highly aromatic hydrocarbons like coronene. Furthermore, compared to previous studies, an on-column injector was used to reduce discrimination of high boiling point compounds.
IFP Énergies nouvelles, Rond-point de l'échangeur de Solaize, BP 3, 69360 Solaize, France.
Laure
L
Mahé
Marion
M
Courtiade
Cyril
C
Dartiguelongue
Jérémie
J
Ponthus
Vincent
V
Souchon
Didier
D
Thiébaut
D002245:Carbon Dioxide; D002849:Chromatography, Gas / Q000379:methods*; D006358:Hot Temperature; D006838:Hydrocarbons / Q000032:analysis / Q000737:chemistry*; D008968:Molecular Conformation; D008970:Molecular Weight
D006838:Hydrocarbons; D002245:Carbon Dioxide