Quantitation of Components in Crude Oils Using Liquid Chromatography Without Identification

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Abstract
Crude oil samples are studied using reversed-phase, normal-phase, and size-exclusion liquid chromatography. In each chromatographic system, two eluents of similar elution characteristics but different refractive indices (RI) are used. The result can be used to calculate the concentrations as well as the RI of the components as they elute. A fairly comprehensive picture of the content of the samples can then be obtained even though the components are not identified.