地质学报（英文版）2005，Vol.79Issue(1)：11-15,5.
Determination of Fullerenes (C60/C70) from the Permian-Triassic Boundary in the Meishan Section of South China
Determination of Fullerenes (C60/C70) from the Permian-Triassic Boundary in the Meishan Section of South China
摘要
Abstract
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-offlight 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.关键词
fullerenes/mass extinction/Permian-Triassic/laminas/Meishan section/ChinaKey words
fullerenes/mass extinction/Permian-Triassic/laminas/Meishan section/China引用本文复制引用
LI Yanfang,LIANG Handong,YIN Hongfu,SUN Jing,CAI Hou'an,RAO Zhu,RAN Fanlin..Determination of Fullerenes (C60/C70) from the Permian-Triassic Boundary in the Meishan Section of South China[J].地质学报（英文版）,2005,79(1):11-15,5.基金项目
This research were supported by the National Natural Science Foundation of China (NO. 40072055 （）
40232025)and the Research Fund for the Doctoral Program of Higher Education (NO. 20040290005). （NO. 20040290005）
