https://www.google.com/search?q=6ppd-quinone&client=ms-opera-mini-android&channel=new&tpsf=opminienpf
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US EPA Develops 6PPD-q Water Testing | Tyre and Rubber Recycling
6PPD-quinone is a chemical that's toxic to aquatic organisms and can contaminate water systems. It's created when 6PPD, a chemical used in tires, reacts with ozone in the air.
How 6PPD-quinone gets into water
Tires release dust and particles that contain 6PPD-quinone when they wear down on the road.
Stormwater carries these particles into streams, rivers, and other bodies of water.
Effects on aquatic organisms
6PPD-quinone is lethal to coho salmon and other fish species, including brook trout, steelhead, and rainbow trout. .."