Determination of the Chemical Composition of Oil and Gas

Oil is a complex mixture of liquid organic substances in which various solid hydrocarbons, resinous substances and accompanying gases are dissolved.In the article various methods of separation of complex mixtures into simpler compositions were examined.The bulk of the oil components is also determined.An important indicator in the identification of oil products is the amount of aromatic hydrocarbons in their content.In the methods used in the study of petroleum products in environmental objects, gas chromatographic analysis is preferred due to its highest selectivity, sensitivity and accessibility, using different types of detection.On the other hand, during the determination of PAHs in oils and middle distillates, in the chromatograms, the analyte appears against the background of the "naphthenic hump" and paraffins, which form fragments of molecules under electronic conditions, which overlap with each other.Fragments of molecules of substances analyzed in terms of ion mass are placed on them and their mass spectra are analyzed.When performing such analyses, it is practically impossible to identify, quantify, and accurately estimate the signal intensity of peaks associated with polycyclic condensed arenes.