云南禄丰煤岩与围岩中富勒烯(C_(60))物质的初步探索  

Primary investigation of the possible occurrence of geological fullerene (C_(60)) in the coal seams and their wall rocks located in Lufeng of southwestern China.

作　　者：梁汉东[1] 李艳芳[1] 刘敦一[2] 陶儒藻[3] 林玉成 

机构地区：[1]中国矿业大学北京校区 [2]中国地质科学院 [3]中国矿业大学 [4]云南煤田地质局,昆明650000

出　　处：《岩石学报》2002年第3期419-423,共5页Acta Petrologica Sinica

基　　金：国家自然科学基金资助 (项目号 :40 0 72 0 5 5 );国土资源部同位素地质开放实验室开放实验基金部分资助

摘　　要：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此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 C6 0 /C70 )及其衍生物质 (如He@C6 0 /He@C70 )作为地球化学示踪物的古地球灾变大事件的研究 。Up to now, there is no solid evidence for the occurrence of geological fullerenes in the coal of Yunnan, China. We have primarily investigated the coal and its wall rock, located in Lufeng of Yunnan. Meanwhile, a technique employing high performance liquid chromatography associated with three-steps preparation has been developed for separation and determination of fullerenes (C-60) derived from coal as well as geological specimens. As our primary but significant results, fullerene (C-60) has been found in boundary coal-contained clays between the coal seam and its wall rocks with significant amounts such as 0.35mug/g for sample 03# and 0.20mug/g for 05#. However, neither pure clays of wall rock nor pure coals can be determined to contain any amount of fullerene (C-60) according to tests of 8 samples for 02#, 04# and 06# similar to 11#. The fact implies that the substance of geological fullerenes occurring in the studying area probably is not produced directly from the coal but probably has close relationship with the environment of geologically historical formation of the coal. For this reason, it should be paid more attention to the boundary clays on the tops and bottoms of the coal seams in further approaches. In methodology, the technique successfully established in this work is expecting to contribute the exploration of the 'Big Impact' history of our Earth by geological fullerenes (C-60/C-70) or their derivatives (He@C-60/He@C-70) as geological tracers.

关 键 词：天然富勒烯 煤岩 围岩 地学成因 突变事件 云南 

分 类 号：P578.98[天文地球—矿物学] P618.11[天文地球—地质学]