A critique of the manuscript: “Distribution and concentrations of petroleum hydrocarbons associated with the BP/Deepwater Horizon oil spill, Gulf of Mexico”

Wilson, Mark; Wickliffe, Jeffrey K.; Overton, Ed

doi:10.1016/j.marpolbul.2013.10.056

Cited by 4 publications

(4 citation statements)

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“…Chemical levels of concern (CLoCs) were determined by rearranging the cancer risk equation using a deterministic approach. This was done to determine the B[a]P EQ concentration at high intake rates of shrimp and finfish that would be necessary to exceed a 1/10,000 cancer risk (USEPA; Wilson et al., ). To be most conservative in this process, a minimum body weight of 40 kg was used as well as an exposure duration of 59 years and an averaging time of 60 years.…”

Section: Methodsmentioning

confidence: 99%

“…During and following petroleum spills in marine environments, there are often immediate and lingering concerns regarding negative impacts on deep sea as well as estuarine resources and possible health risks associated with consuming finfish and shellfish harvested from affected areas (Bolger, Henry, & Carrington, ; Cunha, Neuparth, Moreira, Santos, & Reis‐Henriques, ; Dickey, ; Field, Fall, & Nighswander, ; Fitzgerald & Gohlke, ; Garza, Prada, Varela, & Rodriguez, ; Genualdi, DeJager, & Begley, ; Gilroy, ; Gohlke, Doke, Tipre, Leader, & Fitzgerald, ; Greiner, Lagasse, & Neff, ; Law, & Hellou, ; Levin, Gilmore, & Carruth, ; Rotkin‐Ellman & Solomon, ; Rotkin‐Ellman, Wong, & Solomon, ; Sammarco et al., ; Sammarco, Kolian, & Warby, ; Sathiakumar, Tipre, & Turner‐Henson, ; Saxton, Newton, & Rorberg, ; Simon‐Friedt et al., ; Surís‐Regueiro, Garza‐Gil, & Varela‐Lafuente, ; Wilson, Wickliffe, & Overton, ; Wilson et al., ; Xia, Hagood, & Childers, ; Ylitalo, Krahn, & Dickhoff, ). This was certainly evident following the two largest marine petroleum spills in the United States, those being the Exxon Valdez tanker spill and the Deepwater Horizon (DWH) platform spill (Bolger et al., ; Dickey, ; Field et al., ; Fitzgerald & Gohlke, ; Genualdi et al., ; Gohlke et al., ; Greiner et al., ; Levin et al., ; Rotkin‐Ellman, & Solomon, ; Rotkin‐Ellman et al., ; Sammarco et al., , ; Sathiakumar et al., ; Saxton et al., ; Simon‐Friedt et al., ; Wilson et al., , ; Xia et al., ; Ylitalo et al., ). Because of such concerns, considerable resources from the responsible party or parties, health agencies, and academic researchers are then directed toward scrutinizing finfish and shellfish samples to determine if any spill‐related chemicals have contaminated the seafood supply (Dickey, ; Gohlke et al., ; Lubchenco, McNutt, & Dreyfus, ; Rotki...…”

Section: Introductionmentioning

confidence: 99%

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Consumption of Fish and Shrimp from Southeast Louisiana Poses No Unacceptable Lifetime Cancer Risks Attributable to High‐Priority Polycyclic Aromatic Hydrocarbons

et al. 2018

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Following oil spills such as the Deepwater Horizon accident (DWH), contamination of seafood resources and possible increased health risks attributable to consumption of seafood in spill areas are major concerns. In this study, locally harvested finfish and shrimp were collected from research participants in southeast Louisiana and analyzed for polycyclic aromatic hydrocarbons (PAHs). PAHs are some of the most important chemicals of concern regarding oil-spill-contaminated seafood resources during and following oil spills. Some PAHs are considered carcinogens for risk assessment purposes, and currently, seven of these can be combined in lifetime cancer risk assessments using EPA approaches. Most PAHs were not detected in these samples (minimum detection limits ranged from 1.2 to 2.1 PPB) and of those that were detected, they were generally below 10 PPB. The pattern of detected PAHs suggested that the source of these chemicals in these seafood samples was not a result of direct contact with crude oil. Lifetime cancer risks were assessed using conservative assumptions and models in a probabilistic framework for the seven carcinogenic PAHs. Lifetime health risks modeled using this framework did not exceed a 1/10,000 cancer risk threshold. Conservative, health-protective deterministic estimates of the levels of concern for PAH chemical concentration and seafood intake rates were above the concentrations and intake rates modeled under this probabilistic framework. Taken together, consumption of finfish and shrimp harvested from southeast Louisiana following the DWH does not pose unacceptable lifetime cancer risks from these seven carcinogenic PAHs even for the heaviest possible consumers.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Consumption of Fish and Shrimp from Southeast Louisiana Poses No Unacceptable Lifetime Cancer Risks Attributable to High‐Priority Polycyclic Aromatic Hydrocarbons

et al. 2018

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“…However, this also means that traditional methods of oil detection using fluorescence based on solvent extractions 26 may not capture the signals, which have been modeled using native fluorescence of seawater. 27 Our objectives here are to (1) determine if oil fluorescence components can still be detected in the water column of the GOM 2 years after the spill and (2) determine if there are any linkages with the metabolism of these oil components, as reflected indirectly by the partial pressure of carbon dioxide (pCO 2 ).…”

Section: ■ Introductionmentioning

confidence: 99%

“…The use of dispersants during the DWH spill appears to have enhanced the aqueous solubility of crude oil, which has resulted in the shift in the EEM spectra as well as degradation of low-molecular-weight hydrocarbons. − Moreover, ratios of oil components identified by EEM–PARAFAC and attributed to DWH oil are characterized by highly degraded oil, suggesting that, while this oil has changed chemically and optically, it can be tracked in the GOM, even over a year after the DWH explosion. However, this also means that traditional methods of oil detection using fluorescence based on solvent extractions may not capture the signals, which have been modeled using native fluorescence of seawater . Our objectives here are to (1) determine if oil fluorescence components can still be detected in the water column of the GOM 2 years after the spill and (2) determine if there are any linkages with the metabolism of these oil components, as reflected indirectly by the partial pressure of carbon dioxide ( p CO 2 ).…”

Section: Introductionmentioning

confidence: 99%

Deepwater Horizon Oil in Gulf of Mexico Waters after 2 Years: Transformation into the Dissolved Organic Matter Pool

Bianchi

Osburn

Shields

et al. 2014

Environ. Sci. Technol.

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Recent work has shown the presence of anomalous dissolved organic matter (DOM), with high optical yields, in deep waters 15 months after the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico (GOM). Here, we continue to use the fluorescence excitation-emission matrix (EEM) technique coupled with parallel factor analysis (PARAFAC) modeling, measurements of bulk organic carbon, dissolved inorganic carbon (DIC), oil indices, and other optical properties to examine the chemical evolution and transformation of oil components derived from the DWH in the water column of the GOM. Seawater samples were collected from the GOM during July 2012, 2 years after the oil spill. This study shows that, while dissolved organic carbon (DOC) values have decreased since just after the DWH spill, they remain higher at some stations than typical deep-water values for the GOM. Moreover, we continue to observe fluorescent DOM components in deep waters, similar to those of degraded oil observed in lab and field experiments, which suggest that oil-related fluorescence signatures, as part of the DOM pool, have persisted for 2 years in the deep waters. This supports the notion that some oil-derived chromophoric dissolved organic matter (CDOM) components could still be identified in deep waters after 2 years of degradation, which is further supported by the lower DIC and partial pressure of carbon dioxide (pCO2) associated with greater amounts of these oil-derived components in deep waters, assuming microbial activity on DOM in the current water masses is only the controlling factor of DIC and pCO2 concentrations.

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A response to Wilson et al. A critique of the manuscript: ‘‘Distribution and concentrations of petroleum hydrocarbons associated with the BP/Deepwater Horizon oil spill, Gulf of Mexico’’

Sammarco¹,

Kaltofen²,

Kolian³

et al. 2014

Marine Pollution Bulletin

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A critique of the manuscript: “Distribution and concentrations of petroleum hydrocarbons associated with the BP/Deepwater Horizon oil spill, Gulf of Mexico”

Cited by 4 publications

References 2 publications

Consumption of Fish and Shrimp from Southeast Louisiana Poses No Unacceptable Lifetime Cancer Risks Attributable to High‐Priority Polycyclic Aromatic Hydrocarbons

Consumption of Fish and Shrimp from Southeast Louisiana Poses No Unacceptable Lifetime Cancer Risks Attributable to High‐Priority Polycyclic Aromatic Hydrocarbons

Deepwater Horizon Oil in Gulf of Mexico Waters after 2 Years: Transformation into the Dissolved Organic Matter Pool

A response to Wilson et al. A critique of the manuscript: ‘‘Distribution and concentrations of petroleum hydrocarbons associated with the BP/Deepwater Horizon oil spill, Gulf of Mexico’’

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