Fate of dispersants associated with the Deepwater Horizon oil spill
Kujawinski, Elizabeth B.
Kido Soule, Melissa C.
Valentine, David L.
Boysen, Angela K.
Redmond, Molly C.
MetadataShow full item record
Response actions to the Deepwater Horizon oil spill included the injection of ~771,000 gallons (2,900,000 L) of chemical dispersant into the flow of oil near the seafloor. Prior to this incident, no deepwater applications of dispersant had been conducted and thus no data exists on the environmental fate of dispersants in deepwater. We used ultrahigh resolution mass spectrometry and liquid chromatography with tandem mass spectrometry (LC/MS/MS) to identify and quantify one key ingredient of the dispersant, the anionic surfactant DOSS (dioctyl sodium sulfosuccinate), in the Gulf of Mexico deepwater during active flow and again after flow had ceased. Here we show that DOSS was sequestered in deepwater hydrocarbon plumes at 1000-1200m water depth and did not intermingle with surface dispersant applications. Further, its concentration distribution was consistent with conservative transport and dilution at depth and it persisted up to 300 km from the well, 64 days after deepwater dispersant applications ceased. We conclude that DOSS was selectively associated with the oil and gas phases in the deepwater plume, yet underwent negligible, or slow, rates of biodegradation in the affected waters. These results provide important constraints on accurate modeling of the deepwater plume and critical geochemical contexts for future toxicological studies.
Author Posting. © The Author(s), 2011. This is the author's version of the work. It is posted here by permission of American Chemical Society for personal use, not for redistribution. The definitive version was published in Environmental Science & Technology 45 (2011):1298–1306, doi:10.1021/es103838p.
Suggested CitationPreprint: Kujawinski, Elizabeth B., Kido Soule, Melissa C., Valentine, David L., Boysen, Angela K., Longnecker, Krista, Redmond, Molly C., "Fate of dispersants associated with the Deepwater Horizon oil spill", 2011-01-05, https://doi.org/10.1021/es103838p, https://hdl.handle.net/1912/4332
Showing items related by title, author, creator and subject.
Photochemical oxidation of oil reduced the effectiveness of aerial dispersants applied in response to the Deepwater Horizon spill Ward, Collin P.; Armstrong, Cassia J.; Conmy, Robyn N.; French-McCay, Deborah P.; Reddy, Christopher M. (American Chemical Society, 2018-04-25)Chemical dispersants are one of many tools used to mitigate the overall environmental impact of oil spills. In principle, dispersants break up floating oil into small droplets that disperse into the water column where they ...
Ryerson, Thomas B.; Camilli, Richard; Kessler, John D.; Kujawinski, Elizabeth B.; Reddy, Christopher M.; Valentine, David L.; Atlas, Elliot; Blake, Donald R.; de Gouw, Joost; Meinardi, Simone; Parrish, David D.; Peischl, Jeff; Seewald, Jeffrey S.; Warneke, Carsten (2011-11-11)Detailed airborne, surface, and subsurface chemical measurements, primarily obtained in May and June 2010, are used to quantify initial hydrocarbon compositions along different transport pathways – in deep subsurface plumes, ...
Petrocarbon evolution: Ramped pyrolysis/oxidation and isotopic studies of contaminated oil sediments from the Deepwater Horizon oil spill in the Gulf of Mexico. Rogers, Kelsey L.; Bosman, Samantha H.; Lardie Gaylord, Mary C.; McNichol, Ann P.; Rosenheim, Brad E.; Montoya, Joseph P.; Chanton, Jeffrey P. (Public Library of Science, 2019-02-28)Hydrocarbons released during the Deepwater Horizon (DWH) oil spill weathered due to exposure to oxygen, light, and microbes. During weathering, the hydrocarbons’ reactivity and lability was altered, but it remained ...