Determination of Sterane and Triterpane in the Tamsagbulag Oilfield

B. Byambagar, E. Enkhtsetseg, D. Monkhoobor, B. Avid, A. Tuvshinjargal
2011 Advances in Chemical Engineering and Science  
Crude oils representing four different holes from the Tamsagbulag oilfield were analyzed by gas chromatography-mass spectrometry (GC/MS) spectroscopy. 52 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
more » ... nd honopregnane originated during the period of very salty sedimentary accumulation in the condition of diagenesis.
doi:10.4236/aces.2011.13024 fatcat:35edc2grzfedrmjwsg3mrjikqq