Scientists have been concerned about
the use of chemical dispersants — which BP dumped over 1 million gallons of throughout the spill — since word came that they were using the stuff.
One possible explanation is that BP's
use of chemical dispersants to break up the oil before it reaches the surface could reduce its buoyancy, keeping it in underwater.
An organisation called Platform says that
the use of chemical dispersants is all but impossible under ice.
And
the use of chemical dispersants are also worrying.
A common line I hear employed to argue in favor of
the use of chemical dispersants goes something like «well, if they weren't using the dispersants, you'd be mad they weren't doing anything.»
The debate about using dispersants is becoming increasingly politicized and acrimonious, and the National Academy of Sciences has recently assembled a committee of scientists, government officials, and industry to evaluate
the use of chemical dispersants in oil spill response.
Not exact matches
Nor did the EPA show the best understanding
of toxicology in urging BP in a directive to
use dispersants with a «toxicity value less than» a certain cutoff: in toxicology, a
chemical that produces harm at low concentrations, say, five parts per million, is more deadly than those that kill at 10 parts per million.
And, unfortunately, the microbes» speed is limited not by the availability
of oil — or even its droplet size, which is why
chemical dispersants have been
used to break up the oil into microbe - friendly globules — but by the availability
of various nutrients, such as nitrogen and phosphorus that wash into the ocean via rivers carrying sediments from the continents.
Meanwhile, WHOI oceanographer Elizabeth Kujawinski has been studying the 800,000 gallons
of chemical dispersant used to break down subsurface oil.
In addition, officials
used 1.8 million gallons
of the
chemical dispersant Corexit to break up the oil.
While the risk to coasts is likely to quickly recede, biologists have expressed strong concerns about the
use of nearly 2 million gallons
of chemical dispersants that don't destroy surface slicks, but simply cause the oil to disperse and sink (not to mention the
dispersants sprayed at the point where oil gushed from the seabed a mile down).
BP
used two kinds
of toxic
chemical dispersants to sink the oil from the Deepwater Horizon disaster, Corexit 9500 and Corexit 9527, manufactured by Nalco Environmental Solutions.
The study, published in the journal Aquatic Toxicology, is titled «
Chemical dispersants used in the Gulf
of Mexico oil crisis are cytotoxic and genotoxic to sperm whale cells.»
After the Deepwater Horizon Oil Spill in the Gulf, almost 2 million gallons
of toxic
dispersants were
used, including the
chemical Corexit, which has been banned in the United Kingdom.
«The
dispersant chemicals used to clean up oil spills have the unintended effect
of transforming crude oil into a toxic mist able to travel for miles and penetrate deep into human lungs, new research has found.»
With BP in the news for their lies about the safety
of chemical dispersant used during the Gulf oil spill, it is hard not to think that Exxon is also lying to the public and their cleanup workers about the safety
of the air and water poisoned by this spill.
I've been wondering recently whether we'll see the worst
of the BP gulf oil spill at all; whether the combined
use of toxic
chemical dispersants and media corralling would prevent the public from ever fully grasping the extent
of the disaster.
Much has been made about BP's
use of toxic
chemical dispersants to break down and disperse the crude throughout the Gulf, and rightfully so.
One
of the most alarming stories to emerge from the entire BP Gulf oil crisis has been the company's penchant for
using toxic
chemical dispersants to try to break up and spread out the oil — and that the federal
When 4.9 million gallons
of crude oil blew out
of Deepwater Horizon's well head in the 2010 Gulf
of Mexico disaster, emergency responders made the decision to add 2 million gallons
of dispersant — a
chemical substance
used to prevent settling or clumping — to the mix.