论文部分内容阅读
检测了6种香精油和加氢松节油中共25个单萜类单体化合物的稳定碳同位素组成,取得了一些有启示意义的结果:(1)由陆生高等植物制取的香精油中各种单萜类的单体化合物的δ13C值均在-34‰～-26‰之间,多数化合物的δ13C值为-29‰～-27‰,数据相当集中;并且不同香精油中同一萜类化合物的δ13C值相当接近.这些数据特征为油气源对比应用研究提供可能.(2)链状单萜的δ13C值较集中,分布在-28.6‰～-26.2‰之间,δ13C的算术平均值为-27.7‰;环状的相对分散,平均值为-28.6‰,但多数的接近这个平均值.(3)单萜类生源化合物还原为单萜烃时,无论是人工过程还是地质过程,都会发生富集13C的同位素分馏效应,其中链状单萜化合物的分馏效应较强.石油中的链状单萜2,6-二甲基辛烷来源复杂,除高等植物外还有其他来源.
The stable carbon isotope composition of 25 monoterpenoid compounds in six kinds of essential oils and hydrogenated turpentine oil was tested and some enlightening results were obtained. (1) Various kinds of essential oil from the terrestrial higher plants The δ13C value of the monoterpene monomeric compounds ranged from -34 ‰ to -26 ‰, and the δ13C values of most compounds ranged from -29 ‰ to -27 ‰. The data were quite concentrated and the data for the same terpenoid in different essential oils The δ13C values are quite close, and these data features may provide the basis for the comparative study of oil and gas sources. (2) δ13C values of chain monoterpenes are more concentrated, ranging from -28.6 ‰ to -26.2 ‰, and the arithmetic mean of δ13C is -27.7 ‰; the relative distribution of the ring, with an average of -28.6 ‰, but most of the close to the average. (3) monoterpenoid biogenic compounds reduced to monoterpene hydrocarbons, both the artificial process or geological processes, will enrich 13C isotope fractionation effect, in which chain-like monoterpene compound fractionation effect is strong.Pharmaceutical oil in the chain of monoterpene 2,6-dimethyloctane source of complexity, in addition to higher plants in addition to other sources.