Application of Normal and Derivative Ultraviolet Absorption Spectroscopy for THK Determination of Aromatic Hydrocarbons in Gas Oils

Dixit, Lalji; Gupta, R. B.; Ram, Siya; Kumar, Pradeep

doi:10.1080/08843759408916174

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“…This method has been widely used in the determination of naphthalenes and acenaphthenes in jet fuel and in white oils free of sulfur and oxygencontaining compounds with low concentrations of aromatics. It has also been used for the determination of aromatic groups in diesel and lubricating oil fractions where, due to overlapping UV spectra, the calibration procedure included the absorbances of the groups at several wavelengths (Dixit et al, 1994).…”

Section: Introductionmentioning

confidence: 99%

Rapid Quantitative Determination of Aromatic Groups in Lubricant Oils Using Gel Permeation Chromatography

Varotsis

Pasadakis

1997

Ind. Eng. Chem. Res.

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An analytical procedure has been developed which enables rapid quantitative determination of the total aromatic components in the petroleum fraction, used in the production of lubricating motor oils. The method utilizes the ultraviolet-diode array (UV-DAD) and refractive index detector (RI) signals derived from a gel permeation ghromatography analysis (GPC). It provides information about the concentrations of the aromatic compound groups (mono-, di-, tri-, thioaromatics) based on the differences in their absorbances in the ultraviolet (UV) spectrum. The method can be also applied for the determination of the distribution of these groups along the molecular weight range.

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Section: Introductionmentioning

confidence: 99%