title: Oil in the Gulf of Mexico after the capping of the BP/Deepwater Horizon Mississippi Canyon (MC-252) well.
abstract: Evidence of fresh oil from the BP/Deepwater Horizon Mississippi Canyon-252 (MC-252) well was found in the northern Gulf of Mexico up to 1 year and 10 months after it was capped on 15 July 2010. Offshore and coastal samples collected after capping displayed ratios of biomarkers matching those of MC-252 crude oil. Pre- and post-capping samples were compared. Little weathering had occurred, based on the abundance of low-molecular-weight (LMW) n-alkanes and polycyclic aromatic hydrocarbons (PAHs) in the post-capping samples. The occurrence of fresh oil in offshore waters and coastal areas suggest that the MC-252 well continued to leak hydrocarbons into the Gulf of Mexico at least until 22 May 2012, the end of this study period.
authors: EcoRigs Non-Profit Organization, 6765 Corporate Blvd., Suite 1207, Baton Rouge, LA, 70809, USA, stevekolian@ecorigs.org.
authors: Steve R
authors: SR
authors: Kolian
authors: Scott A
authors: SA
authors: Porter
authors: Paul W
authors: PW
authors: Sammarco
authors: Detlef
authors: D
authors: Birkholz
authors: Edwin W
authors: EW
authors: Cake
authors: Wilma A
authors: WA
authors: Subra
mesh_terms: D004784:Environmental Monitoring / Q000379:methods*; D019015:Geologic Sediments / Q000737:chemistry*; D060851:Gulf of America; D000066388:Oil and Gas Industry; D010578:Petroleum / Q000032:analysis; D059392:Petroleum Pollution / Q000032:analysis*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis; D014874:Water Pollutants, Chemical / Q000032:analysis*; D014887:Weather
chemical_list: D010578:Petroleum; D011084:Polycyclic Aromatic Hydrocarbons; D014874:Water Pollutants, Chemical