Energy & Fuels 2006, 20, 1235-1241
1235
Comprehensive Compositional Analysis of Hydrotreated and Untreated Nitrogen-Concentrated Fractions from Syncrude Oil by Electron Ionization, Field Desorption Ionization, and Electrospray Ionization Ultrahigh-Resolution FT-ICR Mass Spectrometry Jinmei Fu, Geoffrey C. Klein, Donald F. Smith, Sunghwan Kim, Ryan P. Rodgers,† Christopher L. Hendrickson,† and Alan G. Marshall*,† National High Magnetic Field Laboratory, Florida State UniVersity, 1800 East Paul Dirac DriVe, Tallahassee, Florida 32310-4005 ReceiVed January 11, 2006. ReVised Manuscript ReceiVed March 25, 2006
Untreated and hydrotreated nitrogen-concentrated distillation fractions (483-504 °C) from Syncrude oil have been analyzed by electron ionization, field desorption ionization, and electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. The routinely attainable mass resolving power g300 000 at m/z 300 and sub-ppm mass accuracy allowed for resolution and elemental compositional assignment of various compound classes. Multiple closely spaced mass doublets (with mass differences
