Residue Discovered

Drs. Thomas Bianchi and Shari Yvon-Lewis, GISR PIs, along with others published their results in Environmental Science and Technology.  Their work shows the presence of oil-derived dissolved organic matter, with high optical yields, in deep water fifteen months after the Deepwater Horizon oil spill. Seawater samples were collected from the Gulf of Mexico during a cruise in July 2012 and analyzed for dissolved organic carbon (DOC), dissolved inorganic (DIC) and optical properties. Parallel Factor Analysis (PARAFAC) modeling has shown that, while the DOC concentrations have decreased since just after the Deepwater Horizon spill, some components linked to oil degradation remain higher at certain stations than they are in other areas of the Gulf of Mexico. For more on this please see:

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