Paint grinds seen in many published starting point formulations are often comprised of an acrylic acid polymer dispersant
(equilibrium stabilizing), alcohol ethoxylate (dynamic stabilizing), and an acetylenic diol (dynamic wetting).
Baby" corals of at least some species are vulnerable to Deepwater Horizon oil and are especially likely to die when exposed to dispersants
used during a spill, according to a lab-based study by Mote scientists published in the journal PLOS ONE earlier this year.
from Dow offer formulators a diverse selection of polyacid, hydrophilic copolymer, and hydrophobic copolymer dispersants
to meet a variety of formulation demands.
The researchers warned that using such dispersants
in oil spills near shore could allow these chemicals to penetrate sands deeply enough to threaten groundwater supplies.
Shell said five ships had been deployed to release chemical dispersants
, with two aircraft to assist on Friday, including one that conducted surveillance on Thursday.
It was present months after it was injected into the depths, indicating that the dispersant
had not been rapidly biodegraded by microbes.
are valuable tools for dealing with oil spills, but there are trade-offs.
Lochhead said the new dispersant
is based on scientific principles established decades ago during the development of modern laundry detergents.
Chemist Bob Naman with the Analytical Chemical Testing Lab in Mobile, Alabama, has been testing samples from across the Gulf for oil and dispersant
also takes issue with these recent government statements.
We haven't ignored the EPA guidelines," Allen said, noting dispersant
use was authorized "on a case-by case basis.
Environmental Protection Agency (EPA), held May 26-27 at Louisiana State University, more than 50 scientists concluded that dispersant
applications to that point had been appropriate for the Deepwater Horizon response.
There are signs that the dispersant
is working, but not without consequences: Corexit may have caused the illness of seven cleanup workers, with symptoms including nausea and shortness of breath.