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Franceskin, P.J., Gonzalez-Jiminez, M.G., Darosa, F., Adams, O. and Katan, L. (1986) First Observation of an Iron Porphyrin in Heavy Crude Oil. Hyperfine Interactions, 28, 825-828.
http://dx.doi.org/10.1007/BF02061572

has been cited by the following article:

• TITLE: Extraction of Chemical Constituents of Bitumen Using a Mixed Solvent System

  AUTHORS: Ezekiel Oluyemi Odebunmi, Abimbola George Olaremu

  KEYWORDS: Bitumen, Sara, Ftir, Solvent System

  JOURNAL NAME: Open Journal of Applied Sciences, Vol.5 No.8, August 24, 2015

  ABSTRACT: Several solvents had been used to extract the SARA (Saturate, Aromatic, Resin and Asphaltene) constituents of bitumen. The quantification of such extracts also abounds in open literature but in this work an attempt was made to determine the quality of extraction as a feed stock for processing bitumen using a mixed solvent system. A mixture of heptane and toluene was used to compare with the standard method using heptane. The components were analysed for functional groups of compound types presented in them using Fourier Transform Infrared Spectrophotometry technique (FTIR). The quality of bitumen component extract was not significantly affected by the method of extraction as recommended by the ASTM. The components are mixture of different class of hydrocarbons such as saturated and unsaturated hydrocarbons which conformed to what had earlier been reported by other researchers.