Ozone uptake by commercial brake pads and brake pad components: assessing the potential indirect air quality impacts of non-exhaust emissions

We determine, for the first time, the reactivity of ground brake pads with ozone and discuss the potential impact of this interaction on urban air quality. Non-exhaust emissions have surpassed exhaust emissions in their contribution to traffic particulate matter (PM). One major type is brake wear and, although its physical and toxicological properties have been studied, its atmospheric reactivity is unknown. In a first step toward addressing …