Methylbiphenyl,ethylbiphenyl and dimethylbiphenyl isomer distributions in some sediments and crude oils |
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| Institution: | 1. Institute of Earth Sciences, Heidelberg University, Im Neuenheimer Feld 234, 69120 Heidelberg, Germany;2. Department of Geology, University of Kansas, 1475 Jayhawk Boulevard, 120 Lindley Hall, Lawrence, KS 66045-7613, USA;3. ONHYM – National Office of Hydrocarbons and Mining, Avenue Moulay Hassan 5, Rabat 10050, Morocco;4. DEA Deutsche Erdoel AG, Überseering 40, 22297 Hamburg, Germany;1. Institute of Rock Structure and Mechanics, AS CR, V Holešovičkách 41, 182 09 Prague, Czech Republic;2. Severočeské doly a.s., Doly Bílina, 5. Května 213, 418 29 Bílina, Czech Republic;1. Basin and Reservoir Lab, Department of Earth Sciences, Faculty of Sciences, Dalhousie University, Life Science Center, Dalhousie University Halifax, Canada;2. Departamento de Ciências da Terra, IMAR-CMA/MARE, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, Largo Marquês de Pombal, Coimbra, Portugal;3. Departamento de Paleontología, Facultad de Ciencias Geológicas, Universidad Complutense de Madrid, Madrid, Spain |
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| Abstract: | Petroleum samples and organic extracts from two sedimentary sequences have been analysed using capillary gas chromatography and GC-MS techniques for isomeric methylbiphenyls, ethylbiphenyls and dimethylbiphenyls. The relative abundances of isomers with substituents in the ortho positions decrease with increasing depth (maturity) in both sedimentary sequences. Accordingly, these compounds appear to offer potential as indicators of thermal maturity of sediments. |
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