Analysis of a retort oil from an Israeli shale by gas chromatography-mass spectrometry-selected ion monitoring

The oil from an Israeli shale was fractionated by solvent extraction and silica gel column chromatography. The straight-chain pentane and benzene soluble materials were analysed by the gas chromatography-mass spectrometry-selected ion monitoring method. By monitoring specific fragment ions with representative $\text{m}\text{z}$ values, information was obtained of the chemical structures of the fractions.