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Determination of Sterane and Triterpane in the Tamsagbulag Oilfield
Mongolian Academy of Sciences,
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- 4 Mongolian Academy of Sciences,
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Advances in Chemical Engineering and Science·Volume 01 (2011)·Pages 163–168·Published 20 July 2011·DOI10.4236/aces.2011.13024
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Abstract
Crude oils representing four different holes from the Tamsagbulag oilfield were analyzed by gas chromatography-mass spectrometry (GC/MS) spectroscopy. Fifty-two biomarker compounds, 34 pentacyclic triterpanes and 18 steranes were identified and semi-quantitatively determined by selective ion monitoring (SIM) chromatography. Depending on the oil source, the variation in the pentacyclic triterpanes distribution is more significant than the variation in the sterane distribution. It is said that pregnane and honopregnane originated during the period of very salty sedimentary accumulation in the condition of diagenesis.
KeywordsCrude OilBiomarkerGC-MSTamsagbulag Oilfield
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