6PPD quinone

6PPD quinone has been identified to be the cause behind mass deaths of coho salmon fishes in the creeks of Seattle. It is produced by oxidising 6PPD (a noted anti-oxidant found in tire rubbers). The compound reversed the progress in the salmon population achieved by ambitious restoration projects. The compound had entered the creeks through runoffs from roads. The compound was released from the tires of the vehicles using the roads in the vicinity.

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