Dispersants improved air quality for responders at Deepwater Horizon

In the midst of the Deepwater Horizon crisis, officials

made the unprecedented and controversial decision to inject more than 700,000 gallons of  over 67 days immediately above the oil rig's severed wellhead at the bottom of the ocean. The goal was to break up petroleum that surged uncontrollably from the wellhead into smaller droplets in the deep sea, with the goals of diminishing  and reducing the amount of harmful gases arriving at the ocean surface.
Proponents claim the dispersants did help dissipate oil slicks on the sea surface, causing less oil to taint shoreline beaches and marshes. Opponents said the dispersants themselves were toxic, may have caused environmental damage, and were not effective at reducing the already small droplets forming at the wellhead.


Read more at: https://phys.org/news/2017-08-dispersants-air-quality-deepwater-horizon.html#jCp