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oil dispersants
An oil dispersant is a mixture of surfactants and solvents that helps break oil into small droplets following an oil spill. Small droplets are easier to disperse throughout a water volume, and small droplets may be more readily biodegraded by microbes. Dispersant use involves a trade-off between exposing coastal life to surface oil and exposing aquatic life to dispersed oil. While submerging the oil with dispersant may lessen exposure to marine life on the surface, it increases exposure for animals dwelling underwater, who may be harmed by toxicity of both dispersed oil and dispersant.〔(【引用サイトリンク】url=http://www.sciencedaily.com/releases/2013/07/130705212219.htm )〕〔(【引用サイトリンク】url=http://www.biologicaldiversity.org/programs/public_lands/energy/dirty_energy_development/oil_and_gas/gulf_oil_spill/dispersants.html )〕 Although dispersant reduces the amount of oil that lands ashore, it may allow faster, deeper penetration of oil into coastal terrain, where it is not easily biodegraded.
== History ==
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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