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Science 10 July 1992:
Vol. 257. no. 5067, pp. 215 - 217
DOI: 10.1126/science.257.5067.215
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Articles
Fullerenes from the Geological Environment
Peter R. Buseck 1,
Semeon J. Tsipursky 2, and
Robert Hettich 3
1 Departments of Geology and Chemistry, Arizona State University, Tempe, AZ 85287
2 Department of Geology, Arizona State University, Tempe, AZ 85287
3 Anayical Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831
By means of high-resoluton transmission electron microscopy, both C60 and C70 fullerenes have been found in a, carbon-rich Precambrian rock from Russia The fullerenes were confirmed by Fourier transform mass spectrometry with both laser desorption and thermal desorption/electron-capture methods to verify that the fullerenes were indeed present in the geological sample and were not generated by the laser ionization event. The mass spectra were measured under conditions sufficient to resolve the 13C/12C isotopic ratios for C60 and C70 and indicate that these ratios correspond to the normal range of isotopic values.
Submitted on June 15, 1992
Accepted on June 19, 1992
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