After BP’s report that it was unable to find a dispersant that is less toxic than Corexit 9500 – the dispersant that is being used in the Gulf of Mexico – the agency decided to conduct independent toxicity tests to investigate alternatives.
EPA tested Corexit 9500 A and JD-2000, Dispersit SPC 1000, Nokomis 3-F4, Nokomis 3-AA, ZI-400, SAF-RON GOLD, and Sea Brat #4.
The study examined the impact of the eight dispersants on aquatic species that are particularly sensitive to toxins. It found that, when the dispersant is unmixed with oil, none of the tested dispersants displayed biologically significant endocrine disrupting activity and that the dispersants generally have the same impact on the aquatic species.
Additional testing will study the impact of dispersants mixed with oil on aquatic life.
Continue reading ENN: EPA toxicity test results for dispersants
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