Computer Science
Scientific paper
Jul 1964
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1964gecoa..28.1147t&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 28, Issue 7, pp.1147-1154
Computer Science
4
Scientific paper
Tetrapyrrole pigments of the Triassic oil shale of Serpiano, Switzerland have been investigated by means of thin layer chromatography and mass spectrometry. A large number of pigments related to the previously known deoxophyllerythroetioporphyrin and mesoetioporphyrin, their vanadium complexes and the corresponding chlorins were isolated. The pigments extend over the range C 27 -C 34 , the largest pigment containing two carbon atoms more than deoxophyllerythroetioporphyrin. Mechanisms for the geochemical formation of these pigments are suggested. A sequence of unknown porphyrins is also described.
Blumer Max
Thomas D. W.
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