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A Tale of Two Recent Spills — Comparison of 2014 Galveston Bay and 2010 Deepwater Horizon Oil Spill Residues

View Article: PubMed Central - PubMed

ABSTRACT

Managing oil spill residues washing onto sandy beaches is a common worldwide environmental problem. In this study, we have analyzed the first-arrival oil spill residues collected from two Gulf of Mexico (GOM) beach systems following two recent oil spills: the 2014 Galveston Bay (GB) oil spill, and the 2010 Deepwater Horizon (DWH) oil spill. This is the first study to provide field observations and chemical characterization data for the 2014 GB oil spill. Here we compare the physical and chemical characteristics of GB oil spill samples with DWH oil spill samples and present their similarities and differences. Our field observations indicate that both oil spills had similar shoreline deposition patterns; however, their physical and chemical characteristics differed considerably. We highlight these differences, discuss their implications, and interpret GB data in light of lessons learned from previously published DWH oil spill studies. These analyses are further used to assess the long-term fate of GB oil spill residues and their potential environmental impacts.

No MeSH data available.


Concentration levels of various PAHs and alkylated PAH homologs measured in Deepwater Horizon and Galveston Bay oil spill residues.
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pone.0118098.g009: Concentration levels of various PAHs and alkylated PAH homologs measured in Deepwater Horizon and Galveston Bay oil spill residues.

Mentions: Fig. 9 presents PAH concentration levels measured in DWH and GB residues. In Table 3 we summarize these concentrations in terms of five groups of alkylated PAHs (namely naphthalenes, phenanthrenes, dibenzothiophenes, fluorenes and chrysenes) with their parents, and seventeen other PAHs. The extracted ion chromatograms used for quantifying the alkylated PAHs in the GB residue are shown in S1 Chromatogram, S2 Chromatogram, S3 Chromatogram, S4 Chromatogram, S5 Chromatogram. For the DWH sample, the total amount of PAHs was estimated to be 1,714 mg/kg oil. The data also show that the five groups of alkylated PAHs were the most dominant compounds and they accounted for about 95% of total PAHs. Among the five groups, phenanthrenes (Group-2) were the most abundant compounds in the DWH sample with a total concentration of 1,183 mg/kg oil (which is about 69% of total PAHs), followed by chrysenes (Group-5) with a total concentration of 178 mg/kg oil (which is 10% of total PAHs), fluorenes (Group-4) with a total concentration of 132 mg/kg oil (which is 8% of total PAHs), dibenzothiophenes (Group-3) with a total concentration of 98 mg/kg oil (which is 6% of total PAHs), and naphthalenes (Group-1) with a total concentration of 46 mg/kg oil (which is 3% of total PAHs). The total concentration of all other 3- to 6-ring parent PAHs was estimated to be 33 mg/kg oil; biphenyl was not detected in the DWH sample.


A Tale of Two Recent Spills — Comparison of 2014 Galveston Bay and 2010 Deepwater Horizon Oil Spill Residues
Concentration levels of various PAHs and alkylated PAH homologs measured in Deepwater Horizon and Galveston Bay oil spill residues.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4340883&req=5

pone.0118098.g009: Concentration levels of various PAHs and alkylated PAH homologs measured in Deepwater Horizon and Galveston Bay oil spill residues.
Mentions: Fig. 9 presents PAH concentration levels measured in DWH and GB residues. In Table 3 we summarize these concentrations in terms of five groups of alkylated PAHs (namely naphthalenes, phenanthrenes, dibenzothiophenes, fluorenes and chrysenes) with their parents, and seventeen other PAHs. The extracted ion chromatograms used for quantifying the alkylated PAHs in the GB residue are shown in S1 Chromatogram, S2 Chromatogram, S3 Chromatogram, S4 Chromatogram, S5 Chromatogram. For the DWH sample, the total amount of PAHs was estimated to be 1,714 mg/kg oil. The data also show that the five groups of alkylated PAHs were the most dominant compounds and they accounted for about 95% of total PAHs. Among the five groups, phenanthrenes (Group-2) were the most abundant compounds in the DWH sample with a total concentration of 1,183 mg/kg oil (which is about 69% of total PAHs), followed by chrysenes (Group-5) with a total concentration of 178 mg/kg oil (which is 10% of total PAHs), fluorenes (Group-4) with a total concentration of 132 mg/kg oil (which is 8% of total PAHs), dibenzothiophenes (Group-3) with a total concentration of 98 mg/kg oil (which is 6% of total PAHs), and naphthalenes (Group-1) with a total concentration of 46 mg/kg oil (which is 3% of total PAHs). The total concentration of all other 3- to 6-ring parent PAHs was estimated to be 33 mg/kg oil; biphenyl was not detected in the DWH sample.

View Article: PubMed Central - PubMed

ABSTRACT

Managing oil spill residues washing onto sandy beaches is a common worldwide environmental problem. In this study, we have analyzed the first-arrival oil spill residues collected from two Gulf of Mexico (GOM) beach systems following two recent oil spills: the 2014 Galveston Bay (GB) oil spill, and the 2010 Deepwater Horizon (DWH) oil spill. This is the first study to provide field observations and chemical characterization data for the 2014 GB oil spill. Here we compare the physical and chemical characteristics of GB oil spill samples with DWH oil spill samples and present their similarities and differences. Our field observations indicate that both oil spills had similar shoreline deposition patterns; however, their physical and chemical characteristics differed considerably. We highlight these differences, discuss their implications, and interpret GB data in light of lessons learned from previously published DWH oil spill studies. These analyses are further used to assess the long-term fate of GB oil spill residues and their potential environmental impacts.

No MeSH data available.