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Corexit 9500 was designed to replace Corexit 9527. In 2002, Corexit 9527 and Corexit 9500 were the only two chemical dispersants stockpiled in large quantities in the U.S.A. [ 15 ] An estimated 2.5 million gallons of chemicals were used in response to the supertanker SS Torrey Canyon oil spill in the United Kingdom in 1967 . [ 16 ]
The slick was described in the official report as "a moderate sheen with streaks of heavy dark oil moving round the stern of the vessel." Tug boats were driven through the slick in an attempt to break it up, and the spraying of chemical dispersant commenced soon after the spill occurred. 400 litres of Corexit 7764 and 4200 litres of Corexit 9527 were supplied by Santos.
Additional safety concerns were raised by the use of roughly nine million litres of oil dispersants, Corexit 9527 and 9500, during the clean-up operation. It was the largest known application of such dispersants to date, [ 9 ] and the first use of dispersants at that depth.
The BP (BP) oil spill may be over, but controversy over the company's use of toxic oil dispersants in the Gulf of Mexico is still going strong. Although BP allegedly stopped using the chemicals ...
The primary dispersant used were Corexit 9527 and 9500, which were controversial due to toxicity. In 2012, a study found that Corexit made the oil up to 52 times more toxic than oil alone, [ 12 ] and that the dispersant's emulsifying effect makes oil droplets more bio-available to plankton . [ 13 ]
Pemex contracted Conair Aviation to spray the chemical dispersant Corexit 9527 on the oil. A total of 493 aerial missions were flown, treating 1,100 square miles (2,800 km 2) of oil slick. Dispersants were not used in the U.S. area of the spill because of the dispersant's inability to treat weathered oil.
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An RNA sequencing study found that a combination of Corexit and oil may weaken the cell junctions of airway epithelial cells, which is seen in asthma and cystic fibrosis. The authors of this study posit that the results of this RNA transcriptomic study could provide evidence for the mechanisms through which BP oil spill workers experienced ...
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