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Fingerprinting of Crude Oil Spill Sources
Oral Presentation
Prepared by K. Bagawandoss
Accutest Laboratories, 10165 Harwin Drive, Houston, Texas, 77036
Contact Information: drdoss@accutest.com; 713-271-4700
ABSTRACT
Environmental characterization of oil spills requires fingerprinting analysis. All oil spill characterization efforts require sound sampling techniques to obtain representative samples and these samples must be processed by strictly following approved laboratory protocol. This technique is routinely used in NAPL identifications in Groundwater plumes. Further, liability allocation based on the source contributions could be assessed. Fingerprinting analysis provides essential information required to identify the source of an oil spill and facilitate the evaluation of Environmental Risks, Natural Resources Damage Assessments (NRDA), and Litigation. Fingerprinting is complex in nature. Standard materials are not available for all the constituents of concern in the source, therefore parent versus alkyl response factors have to be developed to quantify the constituents present. Several analytes and methods are employed to identify and compare two sources to each other to determine if they are related or unrelated. This presentation will outline the laboratory methods involved in fingerprinting natural and anthropogenic sources. Complex Gas Chromatographic and Mass Spectrometric Single Ion Monitoring techniques are employed to determine if the sources are petrogenic, pyrogenic, diagenic, or biogenic in nature. The data generated will be compared to sources or a library of patterns to determine the source of contamination or migration. Key indicators and diagnostics will be outlined for each of the processes. Diagnostic ratios, histograms, and ion chromatographic patterns for the various hydrocarbons, isoprenoids, parent polycyclic aromatic hydrocarbons (PAHs), alkyl substituted polycyclic aromatic hydrocarbons (alkyl PAHs), and biomarkers (hopanes, steranes, sesquiterpanes and terpanes) for the identifications will be presented. Comparisons will be presented for each of the classifications and groups.
Oral Presentation
Prepared by K. Bagawandoss
Accutest Laboratories, 10165 Harwin Drive, Houston, Texas, 77036
Contact Information: drdoss@accutest.com; 713-271-4700
ABSTRACT
Environmental characterization of oil spills requires fingerprinting analysis. All oil spill characterization efforts require sound sampling techniques to obtain representative samples and these samples must be processed by strictly following approved laboratory protocol. This technique is routinely used in NAPL identifications in Groundwater plumes. Further, liability allocation based on the source contributions could be assessed. Fingerprinting analysis provides essential information required to identify the source of an oil spill and facilitate the evaluation of Environmental Risks, Natural Resources Damage Assessments (NRDA), and Litigation. Fingerprinting is complex in nature. Standard materials are not available for all the constituents of concern in the source, therefore parent versus alkyl response factors have to be developed to quantify the constituents present. Several analytes and methods are employed to identify and compare two sources to each other to determine if they are related or unrelated. This presentation will outline the laboratory methods involved in fingerprinting natural and anthropogenic sources. Complex Gas Chromatographic and Mass Spectrometric Single Ion Monitoring techniques are employed to determine if the sources are petrogenic, pyrogenic, diagenic, or biogenic in nature. The data generated will be compared to sources or a library of patterns to determine the source of contamination or migration. Key indicators and diagnostics will be outlined for each of the processes. Diagnostic ratios, histograms, and ion chromatographic patterns for the various hydrocarbons, isoprenoids, parent polycyclic aromatic hydrocarbons (PAHs), alkyl substituted polycyclic aromatic hydrocarbons (alkyl PAHs), and biomarkers (hopanes, steranes, sesquiterpanes and terpanes) for the identifications will be presented. Comparisons will be presented for each of the classifications and groups.