Alkylbiphenyls in ancient sediments and petroleums |
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| Authors: | R Alexander KM Cumbers RI Kagi |
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| Abstract: | C1 and C2-alkylbiphenyls have been analysed in crude oils and sediment extracts by capillary gas chromatography after preliminary isolation procedures involving TLC and HPLC. The abundance of 2-methylbiphenyl relative to 3-methylbiphenyl has been measured in samples from two sedimentary sequences. 2-Methylbiphenyl decreases in relative abundance with increasing thermal maturity of the sediments in both sedimentary sequences. These isomeric methylbiphenyls are potentially useful as thermal maturity indicators for crude oils. |
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| Keywords: | alkylbiphenyls methylbiphenyls dimethylbiphenyls ethylbiphenyls petroleum crude oil ediments maturity |
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