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气相色谱-质谱联用分析茵陈与牛至挥发油的化学成分 被引量:8
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作者 霍务贞 卫世杰 +4 位作者 袁旭江 索绪斌 李苑新 吴燕红 朱盛山 《广东药学院学报》 CAS 2010年第5期492-496,共5页
目的分析茵陈和牛至中挥发油成分,并比较其异同。方法按2010年版《中国药典》附录[挥发油测定法]中的规定,提取茵陈和牛至中的挥发油,用气相色谱-质谱法分析检测。结果茵陈和牛至挥发油的主要成分均为单萜类、双环倍半萜类成分。该两类... 目的分析茵陈和牛至中挥发油成分,并比较其异同。方法按2010年版《中国药典》附录[挥发油测定法]中的规定,提取茵陈和牛至中的挥发油,用气相色谱-质谱法分析检测。结果茵陈和牛至挥发油的主要成分均为单萜类、双环倍半萜类成分。该两类成分在茵陈挥发油中质量分数分别为31.31%、68.69%;在牛至挥发油中质量分数分别为69.31%、20.25%。其中单萜类成分中两者共有成分的含量分别为17.89%、44.46%;双环倍半萜类成分中两者共有成分的含量分别为21.07%、14.0%。结论茵陈和牛至的挥发油中含有一些相同成分,但含量有较大差异。 展开更多
关键词 茵陈 牛至 挥发油 气相色谱-质谱 单萜类成分 双环倍半萜类成分
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A geochemical investigation of the free and carbonate-bound organic matter in the clay-sized fraction of argillaceous source rocks and its significance for biogenic interpretation 被引量:1
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作者 Yue Zhao Jin-Gong Cai +1 位作者 Tian-Zhu Lei Yan Yang 《Petroleum Science》 SCIE CAS CSCD 2018年第4期681-694,共14页
The molecular composition and biomarker distribution of various occurrences of organic matter in argillaceous source rocks developed in fresh and saline lacustrine environments were revealed by successive treatments o... The molecular composition and biomarker distribution of various occurrences of organic matter in argillaceous source rocks developed in fresh and saline lacustrine environments were revealed by successive treatments of solvent extraction followed by acid hydrolysis using gas chromatography–mass spectrometry. The free fraction obtained by solvent extraction provided abundant geochemical information concerning the sedimentary environment, thermal maturity and biogenic origin, and obvious differences existed between fresh and saline lacustrine source rock samples. Our research results indicate that the carbonate-mineral-bound(CM-bound) fraction released by successive acid hydrolysis could also serve as a significant biogenic indicator, as the bicyclic sesquiterpenoids, indicative of Botryococcus braunii origin, were specifically detected in quite high abundance in the acid-soluble fraction. In addition, the light end hydrocarbons were much better preserved in the acid-soluble fraction, and elemental sulfur was only detected in the CM-bound fraction, suggesting a relatively confined environment for the CM-bound fraction, which thus could preserve additional geochemical information compared to that of the free fraction. The CM-bound fraction also exhibited discernable differences between fresh and saline lacustrine samples. Therefore, it can be concluded that comprehensive analysis of free and CM-bound fractions in the argillaceous source rocks can provide a more authentic and objective interpretation of geologic conditions. 展开更多
关键词 Argillaceous source rock Occurrence Free fraction CM-bound fraction bicyclic sesquiterpenoids Botryococcus braunii Biogenic significance
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泥质烃源岩酸解有机质中两环倍半萜的检出及其意义 被引量:1
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作者 赵悦 蔡进功 +1 位作者 杨燕 雷天柱 《东北石油大学学报》 CAS 北大核心 2018年第2期62-70,79,共10页
以东营凹陷沙三下亚段和沙四上亚段主力烃源岩为研究对象,采用有机溶剂抽提—HCl酸解连续处理实验方法,对泥质烃源岩黏粒级组分的游离态有机质和碳酸盐矿物结合态有机质进行地球化学表征。结果表明:游离态有机质可以提供沉积环境、热成... 以东营凹陷沙三下亚段和沙四上亚段主力烃源岩为研究对象,采用有机溶剂抽提—HCl酸解连续处理实验方法,对泥质烃源岩黏粒级组分的游离态有机质和碳酸盐矿物结合态有机质进行地球化学表征。结果表明:游离态有机质可以提供沉积环境、热成熟度、有机质生源等地化信息,碳酸盐矿物结合态有机质能补充有机质生源信息;碳酸盐矿物结合态有机质能更好地保存烃类组分的轻质端,可以指示Botryococcus braunii生源的两环倍半萜类生物标志化合物仅在赋存态中检出。此外单质硫具有相对较高的丰度,相对封闭的矿物晶格赋存环境使有机质的原生地质信息更好地保留下来。对烃源岩中游离态有机质和矿物结合态有机质的综合分析,可以得到更为真实客观的地质推断结果。 展开更多
关键词 泥质烃源岩 有机质赋存态 游离态 碳酸盐矿物结合态 两环倍半萜 BOTRYOCOCCUS braunii 生源指示意义
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