摘要
为了研究萜类化合物的早期演化特征,对松柏类有机质样品进行了长期(超过5年)的低温(80℃)模拟实验研究.使用色谱和色谱-质谱联用技术,测定了样品模拟早期(1年)和模拟后期(5年半)的饱和烃组成特征,实验结果表明萜类化合物和直链烷烃在沉积后发生了明显的早期演化.利用质谱鉴定出了地质体中较少报道的两种杜松四烯,一种松香四烯和三种降松香四烯等中间演化产物.据此给出了相对完整的杜松类倍半萜和松香类三环二萜的早期演化途径,发现该过程主要生成了萜类的各种芳构化衍生物,细菌等微生物应起到了重要的生物化学促进作用.
Conifer samples were simulated for more than five years at low temperature （80 ℃） in order to study their early alteration processes. The samples were analyzed by chromatography and gas chromatography-mass spectrometry when the simulation lasted approximately one year and five and a half years,respectively. The results show that the alkanes and terpenoids of coniferous organic matter can undergo a remarkable and rapid alteration after sedimentation. Some seldom reported evolutionary intermediates of terpenoids,i.e. two cadinatetraenes,one abietatetraene and three norabietatetraenes,were identified based on their mass fragments. Then the early evolutionary pathways of cadalane-type sesquiterpenoids and abietane-type diterpenoids were proposed. In these processes,the dehydrogenated and aromatic terpenoids are main evolutionary products,which may be mediated by undefined bacteria.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
2011年第1期122-130,共9页
Earth Science-Journal of China University of Geosciences
基金
国家自然科学基金项目(No.40773040)
国家重点基础研究发展计划(No.2003CB214607)
关键词
地球化学
松柏类有机质
萜类化合物
色谱-质谱
低温模拟实验
geochemistry
coniferous organic matter
terpenoids
chromatography-mass spectrometry
low temperature simulation.
