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Summary of Research on Airborne Tire Wear including 6PPD/6PPD-quinone- Tyre Emissions and Sustainability Conference: April 2024
Citation:
Baldauf, R. Summary of Research on Airborne Tire Wear including 6PPD/6PPD-quinone- Tyre Emissions and Sustainability Conference: April 2024. Tyre Emissions & Sustainability Workshop, Irvine, CA, April 24 - 25, 2024.
Impact/Purpose:
As tailpipe emissions from the US and worldwide motor vehicle fleets decrease, impacts of tire and brake wear are an increasingly important area of interest from a public health and environmental quality perspective. This presentation will provide background on the concerns related to 6PPD and 6PPD-quinone impacts from tire wear emissions, as well as describe an ongoing U.S. EPA roadside measurement study investigating airborne concentrations and size distributions of tire wear particles containing 6PPD. The presentation will also discuss some mitigation options being considered for 6PPD/6PPD-quinone, including roadside green infrastructure and 6PPD alternatives. This presentation will be useful for engineers and environmental scientists interested in understanding the potential impacts of tire and brake wear on air and water quality, including 6PPD and 6PPD-quinone contamination.
Description:
With the declining tailpipe emissions from the US and worldwide motor vehicle fleet, impacts of tire and brake wear are an increasingly important area of interest. Recent research has shown the compound 6PPD used in tires as an anti-degradation chemical reacts with ozone to form 6PPD-quinone, which can be highly toxic to certain fish species, including coho salmon. The impact of 6PPD tire wear emissions has been especially damaging to tribes in the US Northwest where coho salmon are a critical resource. In addition, research suggests that human exposures to 6PPD compounds can be high, especially for pregnant women, which has raised concerns about human health impacts. As a result, the states of Washington, Oregon, and California are considering control strategies for 6PPD tire wear emissions. This project will provide background on the concerns related to 6PPD and 6PPD-quinone exposures, as well as describe an ongoing U.S. EPA study investigating airborne concentrations and size distributions of tire wear particles containing 6PPD. The presentation will also discuss some mitigation options being considered for 6PPD/6PPD-quinone, including roadside green infrastructure and 6PPD alternatives
URLs/Downloads:
https://www.emissionsanalytics.com/events/04/2024/tyre-emissions-and-sustainability-usa-2024