Macondo oil in northern Gulf of Mexico waters – Part 2: Dispersant-accelerated PAH dissolution in the Deepwater Horizon plume

Driskell, William B.; Payne, James R.

doi:10.1016/j.marpolbul.2018.02.057

Cited by 18 publications

(14 citation statements)

References 41 publications

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“…Half of these contained particulate oil droplets, most with extra dissolved components. Dispersant-mediated effects were apparent in about one-sixth of the profiles, i.e., they showed the diagnostics of enhanced dissolution discussed in Driskell and Payne (2018b). A few anomalously high-concentration samples in the NRDA dataset suggested the inclusion of surface-slick oil.…”

Section: Resultsmentioning

confidence: 79%

“…At the entrapped plume depth (~1,000-1,400 m), field collections followed a sensor trail of particulatephase (category 1) samples out to 155 km from the wellhead, while dissolved-profile (category 2) samples, typically with dispersant indicators, ranged to 267 km SW from the wellhead, and unresolvedphase (category 3) samples to 412 km from the wellhead (Figure 6, Figure 7, Figure 8, and Figure S-5). Dispersant-mediated samples with dispersant-modified, accelerated-dissolution profiles (described in Driskell and Payne, 2018b) extended out to 184 km SW within the deepwater plume and up to 148 km NE in surface waters (< 20 m) atop the shelf (Figure 9). Non-matching samples were collected out to 530 km along the continental shelf break and 437 km near but outside of the plume track from the wellhead (Figure S-6).…”

Section: Resultsmentioning

confidence: 99%

“…The final dataset, including extra details regarding phase state and weathering and sampling metadata, suggested patterns and trends that led to further insights into transport and weathering processes. For example, when first encountered, enhanced dissolution patterns were enigmatic until a correlation with dispersant indicators was noted (See part 2 of this series, Driskell and Payne, 2018b).…”

Section: Forensic Matchingmentioning

confidence: 99%

“…While the scope of this paper summarizes, in a somewhat narrative style, the methods, results and conclusions documenting the DWH exposure, forensic methods and enhanced-dissolution dispersant effects are detailed in the supplemental information (SI) and Part 2 of this series, Driskell and Payne (2018b).…”

Section: Introductionmentioning

confidence: 99%

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Macondo oil in northern Gulf of Mexico waters – Part 1: Assessments and forensic methods for Deepwater Horizon offshore water samples

Payne¹,

Driskell

2018

Marine Pollution Bulletin

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Section: Resultsmentioning

confidence: 79%

Section: Resultsmentioning

confidence: 99%

Section: Forensic Matchingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Macondo oil in northern Gulf of Mexico waters – Part 1: Assessments and forensic methods for Deepwater Horizon offshore water samples

Payne¹,

Driskell

2018

Marine Pollution Bulletin

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“…In-situ-burning (ISB) of herded oil at the surface also caused portions of burned oily residues to partition back into the water column. Dispersants were also applied into the jetting oil at the kinked riser and well head, mostly between the middle of May until well capping on July 15, 2010, impacting the partitioning of oil compounds between different water phases (sea surface, deep plume, surface layer) (Hemmer et al, 2011;Chakraborty et al, 2012;Paris et al, 2012;Kleindienst et al, 2015;Deleo et al, 2016;Olson et al, 2017;Crowley et al, 2018;Doyle et al, 2018;Driskell and Payne, 2018). A variety of physical, chemical, and biological mechanisms rapidly transformed, removed, and redispersed spilled oil and dissolved gases.…”

Section: Introductionmentioning

confidence: 99%

Fates of petroleum during the deepwater horizon oil spill: A chemistry perspective

et al. 2022

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We describe the initial bulk and compound specific composition of the liquid oil spilled during the Deepwater Horizon (DwH) disaster. The emphasis is on the target hydrocarbon compounds typically found in highest concentrations and on those of concern from a toxicological perspective (i.e., the target normal alkanes and isoprenoids, and PAHs on U.S. Environmental Protection Agency’s (EPA) priority list with their alkyl homolog compounds), and/or those relevant for forensic fingerprinting of spill residues (i.e., sulfur containing PAHs and biomarker compounds). Weathering changed the oil’s composition in various environmental compartments. These compositional changes and potential environmental impacts of the remaining weathered residues are presented in this paper. Biodegradation occurred in both surface and subsurface environments while photooxidation primarily modified and removed hydrocarbons in floating oil slicks. The volatile, soluble and highly labile C1 to C10 hydrocarbons were rapidly degraded in the water column and/or emitted to the atmosphere (evaporation). The semi-volatile hydrocarbons (labile C10 to C25) that remained in the water column and floating oil on the water’s surface were lost from oil residues during weathering. The heavy nonvolatile and insoluble hydrocarbons (recalcitrant C25+) were least affected by initial weathering processes in 2010. The composition of the residual oil fraction in surface floating oil was further altered by the addition of oil soluble oxy hydrocarbons produced from photooxidation. During 2011 and 2012 the resulting highly insoluble recalcitrant C25+ oily residues remained on the shorelines, bottom sediments, or bound to suspended particulates in the water column, with detectable residues mostly returning to near pre-spill levels by 2015 to 2020. Some recalcitrant oil residues can still be found at various locations, including some coastal environments (e.g., marshes), or deep-water sediments, at very low levels, ten years after the spill.

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Effects of pollution on marine organisms

Mearns

Bissell

Morrison

et al. 2019

Water Environment Research

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This review covers selected 2018 articles on the biological effects of pollutants, including human physical disturbances, on marine and estuarine plants, animals, ecosystems, and habitats. The review, based largely on journal articles, covers field and laboratory measurement activities (bioaccumulation of contaminants, field assessment surveys, toxicity testing, and biomarkers) as well as pollution issues of current interest including endocrine disrupters, emerging contaminants, wastewater discharges, marine debris, dredging, and disposal. Special emphasis is placed on effects of oil spills and marine debris due largely to the 2010 Deepwater Horizon oil blowout in the Gulf of Mexico and proliferation of data on the assimilation and effects of marine debris. Several topical areas reviewed in the past (e.g., mass mortalities ocean acidification) were dropped this year. The focus of this review is on effects, not on pollutant sources, chemistry, fate, or transport. There is considerable overlap across subject areas (e.g., some bioaccumulation data may be appear in other topical categories such as effects of wastewater discharges, or biomarker studies appearing in oil toxicity literature). Therefore, we strongly urge readers to use keyword searching of the text and references to locate related but distributed information. Although nearly 400 papers are cited, these now represent a fraction of the literature on these subjects. Use this review mainly as a starting point. And please consult the original papers before citing them.

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Macondo oil in northern Gulf of Mexico waters – Part 2: Dispersant-accelerated PAH dissolution in the Deepwater Horizon plume

Cited by 18 publications

References 41 publications

Macondo oil in northern Gulf of Mexico waters – Part 1: Assessments and forensic methods for Deepwater Horizon offshore water samples

Macondo oil in northern Gulf of Mexico waters – Part 1: Assessments and forensic methods for Deepwater Horizon offshore water samples

Fates of petroleum during the deepwater horizon oil spill: A chemistry perspective

Effects of pollution on marine organisms

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