School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
Australian Centre for Research on Separation Science, School of Chemistry, Monash University, Clayton, Victoria 3800, Australia.
Talanta. 2014 Mar;120:55-63. doi: 10.1016/j.talanta.2013.11.069. Epub 2013 Dec 2.
A high sulfur Jordanian oil shale was converted into liquid hydrocarbons by reaction at 390 °C under N2, and the dichloromethane soluble fraction of the products was isolated then analyzed by using gas chromatography (GC). Comprehensive two-dimensional GC (GC×GC) and multidimensional GC (MDGC) were applied for component separation on a polar - non-polar column set. Flame-ionization detection (FID) was used with GC×GC for general sample profiling, and mass spectrometry (MS) for component identification in MDGC. Multidimensional GC revealed a range of thiophenes (th), benzothiophenes (bth) and small amounts of dibenzothiophenes (dbth) and benzonaphthothiophenes (bnth). In addition, a range of aliphatic alkanes and cycloalkanes, ethers, polar single ring aromatic compounds and small amounts of polycyclic aromatics were also identified. Some of these compound classes were not uniquely observable by conventional 1D GC, and certainly this is true for many of their minor constituent members. The total number of distinct compounds was very large (ca.>1000). GC×GC was shown to be appropriate for general sample profiling, and MDGC-MS proved to be a powerful technique for the separation and identification of sulfur-containing components and other polar compounds.
一种高硫约旦油页岩在氮气下于 390°C 进行转化，生成的液体碳氢化合物用二氯甲烷萃取，萃取物再用气相色谱（GC）进行分析。在极性非极性柱系上应用全二维气相色谱（GC×GC）和多维气相色谱（MDGC）进行组分分离。GC×GC 采用火焰离子化检测（FID）进行一般样品分析，MDGC 则采用质谱（MS）进行组分鉴定。MDGC 揭示了一系列噻吩（th）、苯并噻吩（bth）和少量二苯并噻吩（dbth）和苯并萘并噻吩（bnth）。此外，还鉴定出一系列脂肪烷烃和环烷烃、醚、极性单环芳烃和少量多环芳烃。其中一些化合物类别用传统的一维 GC 无法唯一观察到，而且对于它们的许多次要成分来说，这肯定是正确的。不同化合物的总数非常庞大（约>1000）。GC×GC 适合用于一般样品分析，MDGC-MS 则是分离和鉴定含硫成分和其他极性化合物的有力技术。
