Biomarkers of Light Hydrocarbons from Pinus Pollen through Thermal Experiment
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摘要: 研究表明,花粉的产烃高峰在热模拟的300℃～500℃,主产烃期在350℃～450℃。200℃以前仅有微量的轻烃产出,550℃以后因强烈的热降解效应轻烃馏份也大大降低。轻烃主要由四个组份组成,最主要的组份是1～4个芳环的芳烃系列化合物,它们在450℃以前占总轻烃的55.17%～65.21%,500℃以后的轻烃中多环芳烃化合物几乎占到100%。其次组份是正构烷烃、烷基环己(戊)烷和长链脂肪酸(酯)系列化合物。本次检出的众多的生物标志化合物,在我国以陆生生物为主要母质输入类型的沉积有机质、原油及煤岩中均被检出过。因此,本次实验对研究陆相成油(气)中孢粉的贡献及孢粉的成烃、排烃机理的研究提供了有意义的信息。Abstract: The study results indicated that the light hydrocarbons are mainly produced from the pinus pollen between 300~500℃，maximum at 350~450℃. When temperature is lower than 200℃，there are only traces of the light hydrocarbons produced.Higher 550℃，the light hydrocarbons are far less because of stronger thermal degradation. The light hydrocarbons consist offour components. The main component is aromatic serial compounde which consist of 1~4 aromatic rings. The aromatic com-ponent in the total light hydrocarbons is about 55. 17~65. 20%when the temperature is lower than 450℃. Hower,at over550℃ the light hydrocarbons consist almost all of aromatic compounds. The other components in the light hydrocarbons arenormal alkanes. alkyl cyclohexanes & alkyl cyclopentanes and long-chain fatty acid (or ester) serial compounds. Thesebiomarkers have been identified from oils, coals and other sedimentary organic matters which the main organic source are theterrestrial higher plants. So, this paper will provide the important imformations in recognising the hydrocarbon source tom-pounds of terrestrially crude oils (gases) and in the theory of the productive hydrocarbons during thermal maturation.
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Key words:
- light hydrocarbon /
- Pinus pollen /
- thermal experiment /
- biomarker
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