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S. Aboglila, K. Grice, K. Trinajstic, et al., “Use of Biomarker Distributions and Compound Specific Isotopes of Carbon and Hydrogen to Delineate Hydrocarbon Characteristics in the East Sirte Basin (Libya),” Organic Geochemistry, Vol. 41, No. 12, 2010, pp. 1249-1258. doi:10.1016/j.orggeochem.2010.05.011

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• TITLE: Determination of Sterane and Triterpane in the Tamsagbulag Oilfield

  AUTHORS: B. Byambagar, E. Enkhtsetseg, D. Monkhoobor, B. Avid, A. Tuvshinjargal

  KEYWORDS: Crude Oil, Biomarker, GC-MS, Tamsagbulag Oilfield

  JOURNAL NAME: Advances in Chemical Engineering and Science, Vol.1 No.3, July 22, 2011

  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.