Group-Type and Fingerprint Analysis of Roasted Food Matrices (Coffee and Hazelnut Samples) by Comprehensive Two-Dimensional Gas Chromatography

2008 ◽  
Vol 56 (17) ◽  
pp. 7655-7666 ◽  
Author(s):  
Chiara Cordero ◽  
Carlo Bicchi ◽  
Patrizia Rubiolo
Keyword(s):  
Gas Chromatography ◽  
Two Dimensional ◽  
Fingerprint Analysis ◽  
Group Type ◽  
Food Matrices

scholarly journals Rapid hydrocarbon group-type semi-quantification in crude oils by comprehensive two-dimensional gas chromatography

Fuel ◽  
2018 ◽  
Vol 220 ◽  
pp. 379-388 ◽  
Author(s):  
Dayane M. Coutinho ◽  
Daniela França ◽  
Gabriela Vanini ◽  
Luiz André N. Mendes ◽  
Alexandre O. Gomes ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Crude Oils ◽  
Two Dimensional ◽  
Hydrocarbon Group ◽  
Group Type

Elucidation of fatty acid profiles in vegetable oils exploiting group-type patterning and enhanced sensitivity of comprehensive two-dimensional gas chromatography

2008 ◽  
Vol 31 (10) ◽  
pp. 1797-1802 ◽  
Author(s):  
Peter Quinto Tranchida ◽  
Agostino Giannino ◽  
Monica Mondello ◽  
Danilo Sciarrone ◽  
Paola Dugo ◽  
...  
Keyword(s):  
Gas Chromatography ◽  
Fatty Acid ◽  
Vegetable Oils ◽  
Two Dimensional ◽  
Fatty Acid Profiles ◽  
Group Type ◽  
Enhanced Sensitivity

scholarly journals Detailed Group-Type Characterization of Plastic-Waste Pyrolysis Oils: By Comprehensive Two-Dimensional Gas Chromatography Including Linear, Branched, and Di-Olefins

Separations ◽  
2021 ◽  
Vol 8 (7) ◽  
pp. 103
Author(s):  
Hang Dao Thi ◽  
Marko R. Djokic ◽  
Kevin M. Van Geem
Keyword(s):  
Gas Chromatography ◽  
Plastic Waste ◽  
Two Dimensional ◽  
Group Type ◽  
Flame Ionization ◽  
Type Composition ◽  
Pyrolysis Oils ◽  
Nitrogen Containing Compounds ◽  
Chemiluminescence Detector

Plastic-waste pyrolysis oils contain large amounts of linear, branched, and di-olefinic compounds. This makes it not obvious to determine the detailed group-type composition in particular to the presence of substantial amounts of N-, S-, and O-containing heteroatomic compounds. The thorough evaluation of different column combinations for two-dimensional gas chromatography (GC × GC), i.e., non-polar × polar and polar × non-polar, revealed that the second combination had the best performance, as indicated by the bi-dimensional resolution of the selected key compounds. By coupling the GC × GC to multiple detectors, such as the flame ionization detector (FID), a sulfur chemiluminescence detector (SCD), a nitrogen chemiluminescence detector (NCD), and a mass spectrometer (MS), the identification and quantification were possible of hydrocarbon, oxygen-, sulfur-, and nitrogen-containing compounds in both naphtha (C5–C11) and diesel fractions (C7–C23) originating from plastic-waste pyrolysis oils. Group-type quantification showed that large amounts of α-olefins (36.39 wt%, 35.08 wt%), iso-olefins (8.77 wt%, 9.06 wt%), and diolefins (4.21 wt%, 4.20 wt%) were present. Furthermore, oxygen-containing compounds (alcohols, ketones, and ethers) could be distinguished from abundant hydrocarbon matrix, by employing Stabilwax as the first column and Rxi-5ms as the second column. Ppm levels of sulfides, thiophenes, and pyridines could also be quantified by the use of selective SCD and NCD detectors.

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