A comparison of results obtained using liquid injection and headspace solid-phase microextraction for crude oil analysis by GC with mass spectrometer detection.
Gas chromatographic (GC) analysis in solution and head space solid-phase microextraction (SPME)-GC analysis of a sample of crude oil gave different results. The SPME technique allowed the identification of a larger number of components than by using usual GC-mass spectrometry (MS). The method failed within the range of C14-C25 where GC-MS in solution allowed to obtain more representative results; on the contrary, SPME allowed to obtain data on the presence of volatile compounds that can not be identified in GC-MS analysis in solution. Furthermore, in the range C8-C12, SPME allowed to identify approximately 30 compounds not shown in the GC-MS analysis in solution. SPME analysis showed the presence of some alkenes not identified in GC-MS analysis in solution. SPME-GC-MS can be used in the analysis of crude oil in contaminated soil.
D'Auria
Maurizio
M
Dipartimento di Chimica, Università della Basilicata, Via N. Sauro 85, Potenza, Italy. maurizio.dauria@unibas.it
Racioppi
Rocco
R
Velluzzi
Vincenzina
V
D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D010578:Petroleum / Q000032:analysis*; D052617:Solid Phase Microextraction / Q000379:methods*
D010578:Petroleum