This ISO TS (ISO/TS 20593:2017) specifies a method for the determination of the airborne concentration (μg/m3), mass concentration (μg/g) and mass fraction (%) of tire and road wear particles (TRWP) in ambient particulate matter (PM) samples.
ISO/TS 20593:2017 establishes principles for air sample collection, the generation of pyrolysis fragments from the sample, and the quantification of the generated polymer fragments. The quantified polymer mass is used to calculate the fraction of tire tread in PM and concentration of tire tread in air. These quantities are expressed on a TRWP basis, which includes the mass of tire tread and mass of road wear encrustations, and can also be expressed on a tire rubber polymer or tire tread basis.
The method is suitable for the determination of TRWP in indoor or outdoor atmospheres.