Identification and quantification of mixed sources of oil spills based on distributions and isotope profiles of long-chain n-alkanes

  • Li Y
  • Xiong Y
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Combined with quantitative determination of concentration and isotopic composition of petroleum hydrocarbons, weathering simulation experiments on artificially mixed oils and their two end-member oils are performed for identification and quantification of mixed sources. The >C18n-alkanes show no appreciable losses during a short-term weathering process. An approach based on distribution of long-chain n-alkanes (>C18) is suggested for estimating the contribution proportion of each source in mixed oils. Stable carbon isotope profile of individual n-alkanes is a powerful tool to differentiate sources of oil spills, but unavailable to accurately allocate each contribution due to a relatively large analytical error. © 2009 Elsevier Ltd. All rights reserved.

Author-supplied keywords

  • Long-chain n-alkanes
  • Mixed sources
  • Simulating experiment
  • Weathering
  • δ13C

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