Macrocyclic alkanes in crude oils from the algaenan of Botryococcus braunii
MetadataShow full item record
The link to the journal’s home page is: "http://www.elsevier.com/wps/find/journaldescription.cws_home/622273/description#description" Copyright © 2002 Elsevier B.V. All rights reserved
New classes of biomarkers, macrocyclic alkanes, have been previously identified in high grade oil shales (torbanites, Late Carboniferous-Late Permian) containing remains of the freshwater alga Botryococcus braunii (B. braunii). In this study we report the occurrence of these compounds in two Indonesian crude oils (Minas and Duri, Tertiary) utilising metastable reaction monitoring GC?MS experiments. Based on 13C data and the distributions of the macrocyclic alkanes we suggest that the macrocyclic alkanes are likely formed by an olefin metathesis reaction of a structurallyspecificpolyunsaturated precursor i.e. the algaenan of B. braunii. The macrocyclic alkanes appear to be novel markers of B. braunii and add to the catalogue of the characteristic hydrocarbons derived from this alga. More importantly, these components could be original markers specific to the highly resistant algaenan of B. braunii in sediments and crude oils, unlike n-alkanes which can have multiple origins.
Showing items related by title, author, creator and subject.
Dawson, Daniel (2006)Early research into the stable hydrogen isotopic compositions (δD) of petroleum involved bulk deuterium/hydrogen (D/H) measurements which, while providing some useful information, had to contend with the analysis of complex ...
Audino, Michiele; Grice, Kliti; Alexander, Robert; Kagi, Robert (2004)A molecular sieve method using NaX (13X) has been used to separate macrocyclic alkanes (in the carbon number range C14?C34), markers of the freshwater alga Botryococcus braunii, from the branched/cyclic hydrocarbon fractions ...
Audino, Michiele; Grice, Kliti; Alexander, Robert; Kagi, Robert (2001)A new class of cyclic hydrocarbon biomarker, macrocyclic-alkanes and their methylated analogues, have for the first time been unambiguously identified in a Botryococcus braunii rich sediment (torbanite).The compounds, ...