ISO/TC 146/SC 3/WG 22 - Measurement of substances in ambient air from transportation sources
Encompass the measurement of all substances in ambient air from transportation sources, including materials in all physical forms and chemical composition
Mesurage des substances émises par les moyens de transport, dans l’air ambiant
Englober le mesurage de toutes les substances émises par les moyens de transport dans l'air ambiant, y compris les matériaux sous toutes leurs formes physiques et leur composition chimique
General Information
This document describes methods for determining air speed and flow direction, CO, NO and NO2 concentrations and visibility in road tunnels using direct-reading instruments. This document specifically excludes requirements relating to instrument conformance testing.
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ISO/TS 20593:2017 specifies a method for the determination of the airborne concentration (μg/m3), mass concentration (μg/g) and mass fraction (%) of tyre 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 tyre tread in PM and concentration of tyre tread in air. These quantities are expressed on a TRWP basis, which includes the mass of tyre tread and mass of road wear encrustations, and can also be expressed on a tyre rubber polymer or tyre tread basis. Air sample collection is on quartz fibre filters with size-selective input in a range of PM2,5 or PM10. The method is suitable for the determination of TRWP in indoor or outdoor atmospheres.
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Frequently Asked Questions
ISO/TC 146/SC 3/WG 22 is a Subcommittee within the International Organization for Standardization (ISO). It is named "Measurement of substances in ambient air from transportation sources" and is responsible for: Encompass the measurement of all substances in ambient air from transportation sources, including materials in all physical forms and chemical composition This committee has published 2 standards.
ISO/TC 146/SC 3/WG 22 develops ISO standards in the area of Information technology. The scope of work includes: Encompass the measurement of all substances in ambient air from transportation sources, including materials in all physical forms and chemical composition Currently, there are 2 published standards from this subcommittee.
The International Organization for Standardization (ISO) is an independent, non-governmental international organization that develops and publishes international standards. Founded in 1947 and headquartered in Geneva, Switzerland, ISO brings together experts from 170+ member countries to share knowledge and develop voluntary, consensus-based standards that support innovation and provide solutions to global challenges.
A Subcommittee (SC) in ISO operates under a Technical Committee and focuses on a specific subset of the TC's scope. Subcommittees develop standards and technical specifications in their specialized area, reporting to their parent Technical Committee. They may also have working groups for detailed technical work.