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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.


Radar plots of hopane diagnostic ratios of Galveston Bay and Deepwater Horizon oil spill residues.
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pone.0118098.g007: Radar plots of hopane diagnostic ratios of Galveston Bay and Deepwater Horizon oil spill residues.

Mentions: The diagnostic ratios of different types of hopanes can be used to identify and differentiate oil spill sources [12,14,18,21]. Various ratios including those of Ts/Tm, C29/C30, C31(S)/C31(S+R), C32(S)/C32(S+R), C33(S)/C33(S+R), C34(S)/C34(S+R) and C35(S)/C35(S+R) in GB and DWH residues are summarized in Table 2 (a portion of the hopane data for DWH oil are from our previous work [12]). These data are also presented as radar plots in Fig. 7; the plots reveal that unique fingerprint patterns exist for these two oils, and these patterns can be used to differentiate these two spills from other past or future oil spills.


A Tale of Two Recent Spills — Comparison of 2014 Galveston Bay and 2010 Deepwater Horizon Oil Spill Residues
Radar plots of hopane diagnostic ratios of Galveston Bay and Deepwater Horizon oil spill residues.
© Copyright Policy
Related In: Results  -  Collection

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

pone.0118098.g007: Radar plots of hopane diagnostic ratios of Galveston Bay and Deepwater Horizon oil spill residues.
Mentions: The diagnostic ratios of different types of hopanes can be used to identify and differentiate oil spill sources [12,14,18,21]. Various ratios including those of Ts/Tm, C29/C30, C31(S)/C31(S+R), C32(S)/C32(S+R), C33(S)/C33(S+R), C34(S)/C34(S+R) and C35(S)/C35(S+R) in GB and DWH residues are summarized in Table 2 (a portion of the hopane data for DWH oil are from our previous work [12]). These data are also presented as radar plots in Fig. 7; the plots reveal that unique fingerprint patterns exist for these two oils, and these patterns can be used to differentiate these two spills from other past or future oil spills.

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.