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云南禄丰煤岩与围岩中富勒烯（C60）物质的初步探索 总被引：3，自引：0，他引：3
中国云南煤中是否存在富勒烯还没有科学定论。本工作运用高效液相色谱方法，对中国云南禄丰晚三叠世煤岩及其围岩中是否存在天然富勒烯物质的问题进行了探索性研究；同时发展了适于从复杂地质样品中分离纯化富勒烯和定性与定量检测富勒烯的一套技术方法。结果显示，从定性角度有两个样品确实存在富勒烯。本文据此提出，富勒烯的赋存与煤岩／围岩交互相上的含煤碳质泥岩有着密切的关系。下一步研究应着重调查比煤岩与顶板和底板界面层并大力研究其中天然富勒烯的地学成因。本工作的意义还在于为今后我国加入和独立开展以富勒烯类物质（如C60／C70）及其衍生物质（如He C60 C70)作为地球化学示踪物的古地球突变大事件的研究，奠定了实验方法学基础。 相似文献
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C_(60)研究现状及前景 总被引：1，自引：0，他引：1
碳除了具有传统观念上的石墨和金刚石两种同素异形体外,近年来人们又发现了第三种同素异形体———Ｃ６０。Ｃ６０以其独特的类似足球状的结构及性能,吸引了各国的科学家,对Ｃ６０的研究在全世界范围内如火如荼地开展起来。笔者在总结Ｃ６０的合成技术、分子结构与性能的基础上,探索了Ｃ６０作为一种新型材料所具有的应用潜力;回顾了从Ｃ６０发现至今十多年的研究历程,并首次将Ｃ６０的研究过程分成三个阶段,即起步阶段（１９８５年～１９９０年）、起飞阶段（１９９１年～１９９３年）和成熟阶段（１９９４年以后）;预测了Ｃ６０及其化合物的应用性研究将成为今后研究的重点和热点。最后,对当前Ｃ６０研究中存在的问题和难点进行了讨论。 相似文献
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Determination of Fullerenes (C_(60)/C_(70)) from the Permian-Triassic Boundary in the Meishan Section of South China 总被引：1，自引：0，他引：1
LI Yanfang LIANG Handong YIN Hongfu SUN Jing CAI Hou''an RAO Zhu RAN Fanlin China University of Mining Technology Beijing Key Laboratory of Coal Resources Ministry of Education Beijing China University of Geosciences Wuhan Hubei 《《地质学报》英文版》2005,79(1):11-15
Fullerenes (C60/C70), clays and rocks near the Permian-Triassic (P/T) boundary in the Meishan section of South China are explored by means of comprehensive analytical techniques, including ultrasonic extraction with column purification, high-performance liquid chromatography (HPLC) and matrix assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI TOF MS). The study confirms the existence of fullerenes toward the P/T event boundary and their absence in clays and limestones beyond the boundary. In particular, the white clay, known as the event boundary, contains fullerenes of 0.33 ppb, while the red material, as the first lamina fill of goethite and gypsum on the base of the white clay, contains fullerenes of 1.23 ppb, and the last lamina of 2.50 ppb. Significantly, distinct enrichment of fullerenes is coincident with the disappearance of fossil records of marine species (94%) just at the base of the white clay,implying that geological fullerenes would be one of temporal remnants led by the P/T catastrophic event. This work strongly supports that fullerenes would be one of significant records of the P/T catastrophic event but their origin remains to be studied further. 相似文献
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天然富勒烯的地质产状与成因 总被引：2，自引：2，他引：0
天然富勒烯研究是富勒烯科学和地质科学相交叉的一个新兴研究领域,迄今为止已在桑加岩、闪电熔岩、陨石撞击坑中的含碳质角砾岩、古近系/白垩系地层界线(E/K)的含碳粘土岩、三叠系/二叠系(T/P)界线岩石(粘土岩、硅质岩)、恐龙蛋壳、煤、重质油、固体沥青以及半天然的烟灰、木炭、书墨等物质中检测到富勒烯的存在,但含量很低。多数天然富勒烯的地质分布、成因机制与陨石撞击、野火、闪电等有关,但部分天然富勒烯的成因尚不清楚。天然富勒烯研究扩展了人们对自然界碳结构及其演化的认识,在地质事件、事件地层如陨石撞击事件、E/K界线、T/P界线等的研究中充分显示了其独特的方法和应用价值。 相似文献
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Higher fullerenes(C84,C90,C92,C94 and C96) were successfully isolated from the Soxhlet extract of the synthetical "Graphote Smokes" soot(GS sample) by using a big Cosmosil Buckysep(Phenomenex) column(250 mm × 10 mm) with a large injection.The fractions isolated have been determined by high performance liquid chro-matography(HPLC) and laser desorption mass spectrometry(LDMS).It is found that there are different fullerenes molecules in different fractions with retention time.The result indicates that fullerenes do exist in GS samples.Also,it excludes the suspicion to some extent that fullerene molecules might be generated by the laser desorption process in the LDMS.In addition,it also provides the experimental basis for the study of natural higher fullerenes and might be helpful to figure out the question if higher fullerenes do exist in the natural samples. 相似文献
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