The vanadium isotopic constitution of petroleum asphaltenes: La Luna Formation (Venezuela)
Pavlović, Mirjana S.
Nešković, Olivera M.
Veljković, Miomir V.
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High-resolution mass spectrometry indicates that the isotopic abundance of V-50 Of the Late Cretaceous La Luna petroleum asphaltenes of marine origin (highly enriched with V GT 2000 ppm)fi higher by about 3.5% than that of the inorganic source (VOSO4 X 5H(2)O, Merck). We propose that the difference in the V-50/V-51 values between the La Luna petroleum asphaltenes and the inorganic source can be best ascribed to the biological processing of seawater vanadium. The fact that the V isotopic compositions of petroleum asphaltenes vary over avery narrow range (2.46-2.52) suggests essentially the same (or similar) and fixed biological source of vanadium. (C) 2000 Elsevier Science Inc. All rights reserved.
Keywords:vanadium / isotope / asphaltene / petroleum
Source:Journal of Inorganic Biochemistry, 2000, 80, 1-2, 153-155
- 2nd Symposium on Biological Aspects of Vanadium, Aug 16-17, 1999, Berlin, Germany