ISOLATION, IDENTIFICATION, AND CORRELATION OF PORPHYRINS IN CONTINENTAL CRUDE OIL, SOURCE ROCK, AND SOME CHINESE OIL SHALE AND COAL

This paper deals mainly with the methodology of the isolation, identification of porphyrins in solvent extraction, TLC, HPLC, GC-MS, UV-visible, and fluorescence spectrophotometry applicable to the crude oils and source rocks of Senli, Ji Zhong, and Liao He Oilfield, as well as oil shales and coals of Fusuin and Myomin basins. Correlation of these oil fields data and the differences among them suggest the following: l.Free porphyrin type based on visible absorption spectrophotometry is of mixed type for crude oil and source rock; is of DPEP for oil shale; is of Etio for coal. 2.Ratio of DPEP/Etio is 2.2-3.4 for crude oil and source rock; is 4.5 for oil shale; is 0.3 for coal. 3.Maximum mass abundance of porphyrin molecules is 462 for crude oil and source rockj is 476 for oil shale; is 478 for coal. 4.Concentration of metal porphyrins is 53-424 ppm for crude oil; is 2.2-31 ppm for oil shale; is 0.25-2 ppm for coal.