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1625510 
Journal Article 
Preparative-Scale Liquid Chromatographic Fractionation of Crude Oils Derived from Coal and Shale 
Russel, A; Guerin, MR; Clark, BR 
1977 
Yes 
Analytical Chemistry
ISSN: 0003-2700
EISSN: 1520-6882 
The Boulevard Kidlington Oxford OX5 1GB 
49 
12 (Oct 1977) 
1766. 
Sephadex LH-20 gel provides a gentle, preparative scale, chemical class separation for a shale-derived crude oil and a coal-derived oil in a fractionation procedure. Described are the three steps of the procedure using the gel in different modes: lipophillic-hydrophillic partitioning using the gel swollen with methanol-water and eluted with hexane; molecular size separation using sephadex LH-20 swollen and eluted with thf; and aliphatic-aromatic separation using the gel swollen and eluted with isopropanol. Large samples can be separated with quantitative recovery. The procedure is designed to produce large quantities of fractions for biological testing with minimal alteration of sample composition. 
SYNTHETIC FUEL ANALYSIS; SHALE OIL; SYNTHETIC CRUDE OIL; CHROMATOGRAPHY; BIOASSAY