Premium
Can crude oils be distinguished by different component distribution obtained by laser desorption ionization mass spectrometry and evaluated by chemometrics?
Author(s) -
Smaniotto Anna,
Montanari Luciano,
Flego Cristina,
Rizzi Andrea,
Ragazzi Eugenio,
Seraglia Roberta,
Traldi Pietro
Publication year - 2008
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.3551
Subject(s) - chemistry , chemometrics , mass spectrometry , component (thermodynamics) , analytical chemistry (journal) , chromatography , thermodynamics , physics
Fourteen different crude oil samples were analyzed as collected by mass spectrometry. For two of them the results obtained by means of different techniques, i.e. electrospray ionization, atmospheric pressure chemical ionization, laser desorption/ionization, were compared. The latter technique leads to the best results: even if unable to give specific information on heteroatom‐containing components, it allows a general view to be obtained of the panorama of the oil composition in terms of molecular weight distribution. The statistical evaluation of the mass spectrometry data by multivariate techniques, such as cluster analysis (Average Linkage) and correspondence analysis, allows evidence for the differences and similarities among the crude oils under study. Copyright © 2008 John Wiley & Sons, Ltd.