Organic Geochemistry and Coal Petrology of Tertiary Brown Coal in the Zhoujing Mine, Baise Basin 3.Characteristics of Polycyclic Aromatic Hydrocarbons
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摘要: 本文详细总结了第三系州景矿褐煤的多环芳烃特征,主要包括芳香倍半萜、二萜、二倍半萜和三萜烃类,其中以惹烯和西蒙内莉烯居优势,由陆源奥利烷、乌散烷和羽扇烷前生物衍生而来的单芳至五芳三萜烃类次之,此外,作为次要成分,还检测出一个四芳降藿烷、十一烷基甲苯和苝等,但大多数常规的多环芳烃仅以微量形式存在。Abstract: The polycyclic aromatic hydrocarbons of the Tertiary brown coal from Zhoujing Mine have been characterized in detail. They are composed mainly of aromatic sesqui-, di-, sester- and triterpenoid hydrocarbons, with retene and simonellite as the predominant species. Secondary in abundance are mono-to penta-aromatic triterpenoid hydrocarbons, derived from oleanane, ursane and lupane precursors, indicators of terrestrial sources. Minor species present are a tetra-aromatic norhopane, undecyltoluene and perylene, and most of the regular PAH are found at trace levels only.
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