BP oil spill: Obama administration's scientists admit alarm over chemicals

The Obama administration is facing internal dissent from its scientists for approving the use of huge quantities of chemical dispersants to tackle the oil spill in the Gulf of Mexico, the Guardian has learned.

The Obama administration is facing internal dissent from its scientists for approving the use of huge quantities of chemical dispersants to tackle the oil spill in the Gulf of Mexico, the Guardian has learned.

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On Wednesday, a toxicologist from Texas Tech University is scheduled to tell a Senate hearing that the unprecedented use of dispersants "created an eco-toxicological experiment".

"The bottom line is that a lot of oil is still at sea dispersed in the water column," said Ron Kendall. "It's a big ecological question as to how this will ultimately unfold." Previous studies, including a 400-page study by the National Academy of Sciences, have warned that the combination of oil and dispersants is more toxic than oil on its own, because the chemicals break down cell walls, making organisms more susceptible to oil.

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