[Analysis of C9 fraction of pyrolysis gasoline by gas chromatography and gas chromatography/mass spectrometry].
The constituents of C9 fraction of pyrolysis gasoline were analyzed by gas chromatography (GC) with flame ionization detector (FID) and gas chromatography/mass spectrometry (GC/MS). A 100 m x 0.25 mm i. d. x 0.5 microm PONA column was used to improve the separation efficiency and sample load compared with the standard PONA column of 50 m x 0.20 mm i. d. Identifications of compounds were based on the standards of n-alkanes and a few aromatics, high accuracy retention time simulation and live retention time database, and cross-references with MS data. The search in live retention time database gives a few possible compounds that were co-eluting or adjacent from each other. While the MS search results for each peak always report 10 or even more compounds who has similar fragments. The cross-reference of the above method yields much more reliable identification results than normal GC/MS search. Quantitative analysis of each compound and the carbon number distribution were performed by GC with FID. Thirty-nine compounds with contents more than 0.2% in the C9 fraction were identified. The relative standard deviation of quantitative analysis was below 5%. It provides a reliable method for detailed analysis of C9 fraction.
Wang
Hua
H
Department of Instrumentation and Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, China. whua1230@dl.cn
Liu
Wenmin
W
Xu
Yuan
Y
Guan
Yafeng
Y