Evaluation of Raman spectroscopy to detect fullerenes in geological materials.
Fullerene C(60) was determined repeatedly from a few types of carbonaceous matter from geological environments. Detailed investigation of structural aspects of pure carbonaceous matrices as well as of their experimental mixtures with fullerene C(60) permits better understanding of the occurrence mode of fullerenes inside the network of natural samples. However, it appears that Raman microspectrometry is not competitive in the case of investigated current geological carbonaceous matrices with added fullerenes, when the concentration of fullerene C(60) is 100 ppm or lower. In such a situation, C(60) is highly dispersed and careful interpretation of the results of Raman microspectrometry does not permit us to obtain valuable quantitative structural data. Obtained sensitivity for detecting C(60) in investigated matrices was only 1%. Analytical reasons for these results are discussed.
Jehlicka
Jan
J
Institute of Geochemistry, Mineralogy and Mineral Resources, Charles University, Albertov 6, 128 43 Prague 2, Czech Republic. jehlicka@natur.cuni.cz
Frank
Otakar
O
Pokorný
Jan
J
Rouzaud
Jean-Noël
JN
D003031:Coal; D037741:Fullerenes / Q000032:analysis* / Q000737:chemistry; D006108:Graphite / Q000737:chemistry; D008903:Minerals / Q000737:chemistry*; D011791:Quartz / Q000737:chemistry; D013059:Spectrum Analysis, Raman
D003031:Coal; D037741:Fullerenes; D008903:Minerals; D011791:Quartz; D006108:Graphite