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Abstract
The use of the gel permeation chromatography (GPC) in the petrochemical laboratory is demonstrated by experimental optimization of the separation, detection and results calculation for fuel oil samples. A chromatographic response based on the fuel oil GPC separation and detection is compared with results of Conradson carbon residue (CCR) determination-which is one of the standard petrochemical tests for residue fuel. The linear relationship between the results of both tests was confirmed. The coincidence of the chromatographic method with the CCR determination is better than ±1.5% in the range 7.5-18.5% CCR. Comparison of refractive and UV detection for fuel oil classification is presented.