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Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale: Origin of etioporphyrin III from heme? by R. Ocampo; H. J. Callot; P. Albrecht; B. N. Popp; M. R. Horowitz; J. M. Hayes is a Agricultural and Biological Sciences article available to read on EtoBox.

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Treibs [1][2][3][4] first isolated porphyrins from sediments and postulated their origin from biological tetrapyrroles. Specifically, through the diagenetic sequence now known as the Treibs Scheme (Fig. 1), he proposed that petroporphyrins of the DPEP type (1) formed from chlorophyll a (3) and that etioporphyrin III (2) derived from the heme group (4) of animal hemopro-teins. More recently, Corwin [5] proposed that etioporphyrin III derived not from heme, but from thermal cracking of DPEP (Fig. 1). Oversimplifications in these views have been revealed by recent spectroscopic and structural studies [6][7][8] which have demonstrated that the materials isolated by Treibs were complex mixtures of homologous series of

Who reads Different isotope compositions of C32 DPEP and C32 etioporphyrin III in oil shale: Origin of etioporphyrin III from heme??

Author

R. Ocampo; H. J. Callot; P. Albrecht; B. N. Popp; M. R. Horowitz; J. M. Hayes

Publisher

Springer; Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC; Society for Mining, Metallurgy and Exploration Inc. (ISSN 0028-1042)

Published

1989

Language

EN

Field

Agricultural and Biological Sciences (Life Sciences)