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FAQ: Airport Tire Wear Pollution Study at Milano Linate Airport
TL;DR
Researchers identified specific tire wear chemical markers at Milano Linate Airport, offering a competitive edge in monitoring and reducing aviation-related pollution for regulatory compliance.
The study analyzed PM10 at Milano Linate Airport, using wind data to distinguish road from airport sources of benzothiazoles and assess occupational exposure risks.
Identifying airport-specific pollution markers helps develop targeted mitigation strategies, improving air quality for workers and communities near aviation hubs worldwide.
Scientists discovered that tire wear during takeoffs and landings releases unique chemical signatures into airport air, revealing a previously overlooked pollution source.
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The research analyzes outdoor PM10 particulate matter at Milano Linate Airport to study tire wear particles (TWPs) and their chemical additives, specifically benzothiazoles (BTHs), which are non-exhaust emissions from airport activities.
This is the first study to identify specific chemical markers for airport non-exhaust emissions, addressing a major knowledge gap since airport non-exhaust emissions have been poorly studied despite their potential environmental impact.
BTH concentrations in outdoor airport PM10 were much higher than in heavily trafficked Italian cities like Milano and Collegno (Torino), indicating significant environmental input from airport activities.
By cross-referencing results with wind direction data, researchers discriminated between contributions from roads/parking areas and airport activities, discovering that the airport specifically emits four benzothiazoles, two of which showed strong correlation.
The ecotoxicological assessment showed a low potential risk of occupational exposure to BTHs in outdoor air at Linate Airport.
The research was conducted at Milano Linate Airport in Italy by an international, multidisciplinary team led by Dr. Giovanna Mazzi, with senior author Prof Andrea Gambaro, and published in Environmental Chemistry and Ecotoxicology.
The study was published in December 2025 and represents the first analysis of outdoor PM10 from an airport to determine concentrations of tire-related additives like benzothiazoles.
Tire wear particles (TWPs) are rubber particles produced during high-speed, high-friction events like landings and takeoffs that enter the air, contributing to atmospheric particulate matter and carrying rubber chemical additives into the environment.
The same benzothiazole compounds that showed strong correlation at the airport did not show this behavior in airborne urban PM10 sampled in other Northern Italian cities, suggesting they are specifically linked to airport activities.
The full study is available at https://doi.org/10.1016/j.enceco.2025.11.011 in the journal Environmental Chemistry and Ecotoxicology.
Curated from 24-7 Press Release
