this review, firstly, a general description on liquid chromatography is given briefly. Next, relating to its application to fuel oil studies, the analytical separation of the constituents, the separation of minor nonhydrocarbon constituents, the recovery of benzene and toluene (Arosorb Process) are taken up here, and relating to the application to lubricating oil studies, the analytical separation of the constituents, the distribution of sulfur compounds among the fractions, separation of additives as well as the estimation of the change in composition by refining processes, the separation of the materials causing the emulsion troubles in treating, the studies on the correlation between composition and performance are illustrated and as for the application to asphalts, analytical separation of the constituents, the studies on the composition and the performance are described.
Finally, some applications to the allied substances of petroleum are shown.
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