作者: M.E.L. Kohnen , J.S.Slnninghe Damsté , A.C. Kock-van Dalen , H.L.Ten Haven , J. Rullkötter
DOI: 10.1016/0016-7037(90)90121-Z
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摘要: Abstract A number of C25 and C30 highly branched isoprenoid (HBI) sulphur compounds (E.G., thiolanes, 1-oxo-thiolanes, thiophenes, benzo[ b ]thiophenes) with 2,6,10,14-tetramethyl-7-(3-methylpentyl)pentadecane 2,6,10,14,18-pentamethyl-7-(3-methylpentyl)nonadecane carbon skeletons were identified in sediments, ranging from Holocene to Upper Cretaceous. These identifications are based on mass spectral characterisation, desulphurisation, and, some cases, by comparison relative retention time data those authentic standards. The presence unsaturated HBI thiolanes a Recent sediment the Black Sea (age 3–6 × 10 3 a) strongly supports their formation during early diagenesis. co-occurrence polyenes (C25 C30) possessing two double bonds less than corresponding polyenes, this sediment, testifies reaction inorganic species polyenes. Furthermore, diagenetic scheme for is proposed identification samples different maturity levels.