Group separation of Maya crude oil was achieved by the saturates-aromatics-resins-asphaltenes (SARA) method. The sulfur-containing compounds in the saturate and aromatic fractions were then separated using a ligand exchange chromatography method based on organosulfur affinity for Cu 2+ and Pd 2+, respectively. The separation into group types is effective as a prelude to the structural characterization of crude oil fractions using elemental analysis, Fourier transform infrared, and both 1 H and 13 C nuclear magnetic resonance spectroscopy. In addition, gel permeation chromatography was compared with atmospheric pressure chemical ionization/mass spectrometry (APCI/MS) in order to determine whether the APCI/MS method could provide a rapid means for the determination of the average molar mass.
No takes yet. Share an insight, caveat, or question.
Rudzinski et al. (2000) studied this question.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: