In work, for the purpose of optimum use of information resources of the spectral analysis it is offered to carry out transformation of graphic information to a numerical look a method of nonlinear approximation by Lorentz's functions. Approximation by Lorentz's function allows to process the difficult ranges consisting of several being blocked peaks of a various form and intensity and quantitatively to establish individual signs of oil products. Parameter of integrated intensity of the allocated strips of absorption in IR ranges and luminescence maxima objectively reflects ratios between separate molecular structures. This parameter can be applied as an identification sign of oil products
oil products, spectral analysis, submission of information, nonlinear approximation
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