Abstract
A procedure is described for the determination of polynuclear aromatic hydrocarbons (PAHs) in petroleum oils, involving extraction of the sample, dissolved in cyclohexane, with N-methylpyrrolidone—water—phosphoric acid, separation of the PAH fraction from the total extract by thin-layer chromatography and an analysis by gas chromatography or gas chromatography—mass spectrometry with selected ion monitoring. The determination of some PAHs in a lubricating and in fuel oil is reported.
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