ISSN:
0935-6304
Keywords:
High boiling petroleum fractions
;
Polar petroleum compounds
;
Compound class separation
;
Normal phase HPLC
;
On-line LC-MS
;
Low voltage electron-impact ionization
;
High resolution mass spectrometry
;
Deuterated ammonia chemical ionization
;
‘Neutral’ and ‘basic’ nitrogen fractions
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Chromatography on Attapulgus clay and on silicic acid has been used to isolate ‘neutral’ and ‘basic’ nitrogen fractions from the 650-1050 °F distillate of an off-shore Californian crude oil. These polar compounds were subjected to on-line liquid chromatography - mass spectrometric (LC-MS) analysis using low voltage electron-impact ionization high resolution mass spectrometry (LVEI HRMS) and deuterated ammonia chemical ionization (ND3 Cl) to determine the molecules' elemental composition and number of exchangeable hydrogen atoms. On-line separation of heavy oils into saturated, 1-4 ring aromatic, and polar compounds was performed by normal phase high performance liquid chromatography (HPLC) on a dinitroanilinopropyl (DNAP) silica column.
Additional Material:
10 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jhrc.1240170415
