Tuesday, August 31, 2010

Chemist: Oysters contain 1.25% (12,500 ppm) hydrocarbons near MS River Delta

Testing Results Returning With High Levels Print E-mail

Report by: Wilma Subra

Results of sampling  performed by the Lower Mississippi River Keeper in the Lower Atchafalaya Bay area on August 2, 2010


Collecting oysters from Oyster Bayou Collecting oysters from Oyster Bayou

The shore of the Gulf of Mexico east of Oyster Bayou, where the Atchafalaya Bay meets the Gulf of Mexico, contained visible oil on the vegetation along the shore line.  Soil in this location contained Carbon Disulfide, 378 mg/kg Hydrocarbons and six Polynuclear Aromatic Hydrocarbons (PAHs) (0.222 mg/kg). The oiled vegetation contained 2.3% Hydrocarbons and 31 PAHs (0.554 mg/kg) that  corresponded strongly to the PAHs in the Deepwater Horizon Crude Oil spill.  Samples of Blue Crab and Fiddler Crab contained 2,230 mg/kg hydrocarbons.

Oysters sampled from a reef on Oyster Bayou in Atchafalaya Bay contained 8,815 mg/kg Hydrocarbons.

Results of sampling performed by the Lower Mississippi River Keeper in the Mississippi River Delta on August 3, 2010


Taking samples in the Mississippi River Delta Taking samples in the Mississippi River Delta

At the mouth of Pass-a-Loutre, in the reed vegetation along the shore of an island, a sediment sample was collected.   The sediment contained 71 mg/kg Hydrocarbons and 14 PAHs (0.8713 mg/kg).  The PAHs in the sample weakly support that the contaminants in the sediment are associated with the crude oil from the Deepwater Horizon.  A muscle sample collected at this location contained 6,900 mg/kg Hydrocarbons and seven PAHs (0.386 mg/kg).

A sample of oysters was collected from oysters growing on  an abandoned crab trap between Pass-a-Loutre and Redfish Bay.  The oysters contained  12,500 mg/kg (1.25%) Hydrocarbons and two PAHs (0.063 mg/kg).

READ MORE AT THE LINK:
http://leanweb.org/news/latest/testing-results-returning-with-high-levels.html

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