Abstract
The mass spectrometric analysis was devised to analyse quantitatively aromatic hydrocarbons and thiophenic sulfur compounds separated from the aromatic fraction in high boiling range of petroleum. Thiphenic sulfur compounds in sample were oxidized to sulfons by hydrogen peroxide treatment and the oxidation mixture was separated sulfon fraction and hydrocarbon fraction by liquid chromatography. Aromatics in hydrocarbon fraction were analyzed by the mass spectrometry low voltage ionization method. Sulfon fraction was reduced to thiophenic sulfur compounds by ithium aluminum hydride treatment, and the thiophenic sulfur compounds were analyzed by the mass spectrometry of low voltage ionization method
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