Analysis of carbon and/or hydrogen isotopes on the n-alkanes in an oil or mixture. N-alkanes will be separated from the oil/mixture before the analysis using the method as described in Grice et al, Organic Geochemistry 39 (2008) 284–288. Because of this pre-separation, high precision results can be obtained. The analysis will be done at least in triplicate and will be calibrated regulary against various isotope standards.
C6-C7 range CSIA
In the range propane-toluene the carbon isotopes of ca. 19 components will be analyzed depending on their relative concentrations. Analysis can be done on oil as well as gas samples and will be performed at least in triplicate.
Bulk isotope analysis by EA-IRMS
Besides CSIA where each component is individually analyzed, samples can also be analyzed in bulk by elemental analyzer isotope ratio mass spectrometry (EA-IRMS). Some of the possibillities are: