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Isotopic composition is a powerful tool in petroleum forensics and has found many and varied applications in that field. It has proven most useful as a component in assignments based upon multiple lines of evidence. Isotopic composition is imparted to oil during its formation. This isotopic composition is minimally affected by weathering and thus it is a very useful tool for oils that have had prolonged exposure to the environment. Isotopic composition of bulk samples has seen many applications, but it has been made far more powerful with the advent of compound-specific isotope analysis (CSIA). In another important direction, it is now possible to measure radiogenic carbon (δ14C) in bulk samples, which has also seen promising forensic application. |
