运用化学分离、液相色谱和基体辅助飞行时间质谱等综合方法 ,确定了煤山剖面的富勒烯不仅存在于二叠 -三叠系(P/T)事件界线白粘土中 ,更相对富集在此白粘土底部的微层中 ,相反 ,在 P/T界线附近的其他地层包括其他粘土层中均未检测到富勒烯。富勒烯在白粘土底部微层中相对富集的 Using the methods of chemical separation, liquid chromatography and matrix-assisted time-of-flight mass spectrometry, we found that fullerene in Meishan section not only exists in the boundary clay of Permian-Triassic (P / T) In this microlayer of white clay bottom, on the contrary, no fullerenes were detected in other strata near the P / T boundary, including other clay layers. Fullerenes are relatively enriched in white clay bottom micro-layers