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Journal of Applied Sciences
Year: 2005  |  Volume: 5  |  Issue: 5  |  Page No.: 906 - 909

Characterization of Niger Delta Crude Oil by Infrared Spectroscopy

T.A. Adedosu and O.O. Sonibare    

Abstract: Infrared spectroscopy was applied in characterizing crude oils from Niger Delta in terms of their source and thermal maturity. The samples were characterized based on the peak intensities of the aliphatic and the carboxyl/carbonyl groups relative to the aromatics. Using this method, the oils classified mainly as oil derived from type 1 kerogen contrary to type II/III already reported for Niger delta oil. The Vitrinite Reflectance (VR) values obtained from the VR equivalent grid ranged from 0.5 to 0.7%, indicating that the oils are of low maturity. The estimated VR determined from the IR spectra correlate favourably with available values in the literature. The results of this study showed that Infrared spectroscopy might not be a good tool for oil source characterization but can be useful in determining oil maturity.

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