Carbon isotopic compositions were determined by GC–IRMS for individual n-alkanes in
crude oils and the free, adsorbed and inclusion oils recovered by sequential extraction from …

A method is described to isolate and purify chlorophyll pigments from plant tissues for the
determination of stable car-bon and nitrogen isotope compositions. Chlorophylls are initially …

Saturate fractions of oils and source rocks are generally depleted in 13C relative to the
aromatic fraction. The isotopic difference between these two fractions (Δδaro-sat) is largest …

Palaeoproterozoic black shales form an essential part of the Birimian volcanosedimentary
belt in Burkina Faso, West Africa. The mean Rmax values and the atomic H/C values of the …

Petrographical and geochemical data of gelified and ungelified fossil wood from the Early
Miocene Oberdorf lignite seam (Styrian Basin, Austria) provide evidence that the early …

石油族组分的分离和制备过程是后续分子组成, 同位素分析的基础. 由于同分异构体多,
传统技术制备的芳烃化合物组分仍然无法满足单体化合物的同位素分析要求 …

Abstract The Junggar Basin is a major oil producing province in China. Most oil reservoirs
found so far in this basin are in the Mahu sag and neighboring uplifts, northwestern Junggar …

Bulk sedimentary nitrogen isotope profiles are often used as proxies for depositional redox
conditions, nitrogen cycling, and nutrient uptake in modern and ancient marine systems. The …

地质微生物学是在20 世纪末发展起来的新的地学分支, 主要研究地质环境中的微生物活动过程
及其形成的各种地质地球化学记录. 通过对现代及地质历史上的各种地质环境, 包括极高温 …

Purple phototrophic bacteria of the genus Chromatium can grow as either photoautotrophs
or photoheterotrophs. To determine the growth mode of the thermophilic Chromatium …