Tire toxicity faces fresh scrutiny after salmon die-offs

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For decades, concerns about automobile pollution have focused on what comes out of the tailpipe. Now, researchers and regulators say, we need to pay more attention to toxic emissions from tires as vehicles roll down the road.

Apr 24 2024KFF Health News

Regulators have only begun to address the toxic tire problem, though there has been some action on 6PPD. California has begun taking steps to regulate the chemical, last year classifying tires containing it as a "priority product," which requires manufacturers to search for and test substitutes. California is also studying a request by the California Stormwater Quality Association to classify tires containing zinc, a heavy metal, as a priority product, requiring manufacturers to search for an alternative. Zinc is used in the vulcanization process to increase the strength of the rubber.

In a report issued last year, researchers at Imperial College London said the particles could affect the heart, lungs, and reproductive organs and cause cancer.

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